<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:7b6797f5-e7ea-4449-b638-6fe29527f846,g:8fcf2668-10e9-43c1-985d-b1d3d4ea7a29-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/ConsolidatedStatementsofStockholdersEquity" xlink:type="simple" xlink:href="livn-20231231.xsd#ConsolidatedStatementsofStockholdersEquity"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/ConsolidatedStatementsofStockholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_fc31d8d0-cf39-4369-b0e0-8910dde96632" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_4a519075-6bd7-42d6-a99a-4c73a629a924" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_fc31d8d0-cf39-4369-b0e0-8910dde96632" xlink:to="loc_us-gaap_StatementTable_4a519075-6bd7-42d6-a99a-4c73a629a924" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_1f9269b7-2427-482e-93ee-82f62f941397" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_4a519075-6bd7-42d6-a99a-4c73a629a924" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_1f9269b7-2427-482e-93ee-82f62f941397" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_1f9269b7-2427-482e-93ee-82f62f941397_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_1f9269b7-2427-482e-93ee-82f62f941397" xlink:to="loc_us-gaap_EquityComponentDomain_1f9269b7-2427-482e-93ee-82f62f941397_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_fa34d2dc-dcbd-4093-9e7a-bd5d907aaef4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_1f9269b7-2427-482e-93ee-82f62f941397" xlink:to="loc_us-gaap_EquityComponentDomain_fa34d2dc-dcbd-4093-9e7a-bd5d907aaef4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_954fb4f3-ca16-43b4-9469-a190addb69fb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fa34d2dc-dcbd-4093-9e7a-bd5d907aaef4" xlink:to="loc_us-gaap_CommonStockMember_954fb4f3-ca16-43b4-9469-a190addb69fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_8d05a52a-dad2-4781-a516-7565a5763a8f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fa34d2dc-dcbd-4093-9e7a-bd5d907aaef4" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_8d05a52a-dad2-4781-a516-7565a5763a8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_81a238f1-ca7b-44d5-8677-434ac88bb66d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fa34d2dc-dcbd-4093-9e7a-bd5d907aaef4" xlink:to="loc_us-gaap_TreasuryStockCommonMember_81a238f1-ca7b-44d5-8677-434ac88bb66d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9b8464f4-1fb3-4748-94fd-4b44f87f9341" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fa34d2dc-dcbd-4093-9e7a-bd5d907aaef4" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_9b8464f4-1fb3-4748-94fd-4b44f87f9341" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_3e2acedc-d0c1-43a7-9001-7d00c85ec910" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_fa34d2dc-dcbd-4093-9e7a-bd5d907aaef4" xlink:to="loc_us-gaap_RetainedEarningsMember_3e2acedc-d0c1-43a7-9001-7d00c85ec910" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9f5c993a-5e78-4cd2-910d-6183d8218703" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_fc31d8d0-cf39-4369-b0e0-8910dde96632" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9f5c993a-5e78-4cd2-910d-6183d8218703" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_e17cb281-7149-4799-81a4-652617d18160" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9f5c993a-5e78-4cd2-910d-6183d8218703" xlink:to="loc_us-gaap_CommonStockSharesIssued_e17cb281-7149-4799-81a4-652617d18160" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_e80e6d3c-45bf-4b40-be67-a391ec7cdd60" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9f5c993a-5e78-4cd2-910d-6183d8218703" xlink:to="loc_us-gaap_StockholdersEquity_e80e6d3c-45bf-4b40-be67-a391ec7cdd60" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_47e16a66-472d-4c79-84fd-9f6f2733f0cd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9f5c993a-5e78-4cd2-910d-6183d8218703" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_47e16a66-472d-4c79-84fd-9f6f2733f0cd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_bd43a85a-6d77-454c-be99-116ccd1353c5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9f5c993a-5e78-4cd2-910d-6183d8218703" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueNewIssues_bd43a85a-6d77-454c-be99-116ccd1353c5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_fce95782-1fbf-46f3-ad16-962178c690ba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9f5c993a-5e78-4cd2-910d-6183d8218703" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation_fce95782-1fbf-46f3-ad16-962178c690ba" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_21e89b03-e64c-4ffb-b0e6-4416231a9733" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9f5c993a-5e78-4cd2-910d-6183d8218703" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_21e89b03-e64c-4ffb-b0e6-4416231a9733" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_66266945-e4f3-4f4a-bf5e-6011859d7a5a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9f5c993a-5e78-4cd2-910d-6183d8218703" xlink:to="loc_us-gaap_NetIncomeLoss_66266945-e4f3-4f4a-bf5e-6011859d7a5a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_bb4c7201-816d-4554-a685-2529d9ff127c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_9f5c993a-5e78-4cd2-910d-6183d8218703" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_bb4c7201-816d-4554-a685-2529d9ff127c" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_354aca40-2731-41b8-91be-a3ff1103a884" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_e03e5684-357d-4ac0-a6c6-0d7a4d55fbc9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/BasisofPresentationUseofAccountingEstimatesandSignificantAccountingPoliciesNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#BasisofPresentationUseofAccountingEstimatesandSignificantAccountingPoliciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/BasisofPresentationUseofAccountingEstimatesandSignificantAccountingPoliciesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_d419d9d4-738b-4448-9cc3-642f2094de20" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_aa0bb00d-7152-4bcf-abf0-a05cea0b4d60" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_d419d9d4-738b-4448-9cc3-642f2094de20" xlink:to="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_aa0bb00d-7152-4bcf-abf0-a05cea0b4d60" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_9d7f6e93-7c8e-4899-8d56-dc0088d8006c" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_aa0bb00d-7152-4bcf-abf0-a05cea0b4d60" xlink:to="loc_srt_LitigationCaseAxis_9d7f6e93-7c8e-4899-8d56-dc0088d8006c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_9d7f6e93-7c8e-4899-8d56-dc0088d8006c_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_9d7f6e93-7c8e-4899-8d56-dc0088d8006c" xlink:to="loc_srt_LitigationCaseTypeDomain_9d7f6e93-7c8e-4899-8d56-dc0088d8006c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_d1a18f46-eb09-44ea-b967-a2b81021d16e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_9d7f6e93-7c8e-4899-8d56-dc0088d8006c" xlink:to="loc_srt_LitigationCaseTypeDomain_d1a18f46-eb09-44ea-b967-a2b81021d16e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_SNIAMember_2a9bd87a-f398-4c1e-87d1-b45239a073ca" xlink:href="livn-20231231.xsd#livn_SNIAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_d1a18f46-eb09-44ea-b967-a2b81021d16e" xlink:to="loc_livn_SNIAMember_2a9bd87a-f398-4c1e-87d1-b45239a073ca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusAxis_5c85ca09-9777-4b5f-83c5-55ba3a91d004" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationStatusAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_aa0bb00d-7152-4bcf-abf0-a05cea0b4d60" xlink:to="loc_us-gaap_LitigationStatusAxis_5c85ca09-9777-4b5f-83c5-55ba3a91d004" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain_5c85ca09-9777-4b5f-83c5-55ba3a91d004_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LitigationStatusAxis_5c85ca09-9777-4b5f-83c5-55ba3a91d004" xlink:to="loc_us-gaap_LitigationStatusDomain_5c85ca09-9777-4b5f-83c5-55ba3a91d004_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain_7a71b6cb-d328-48e2-81da-d1daaf736790" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LitigationStatusAxis_5c85ca09-9777-4b5f-83c5-55ba3a91d004" xlink:to="loc_us-gaap_LitigationStatusDomain_7a71b6cb-d328-48e2-81da-d1daaf736790" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_JudicialRulingMember_a1017de5-d102-4bc0-9878-6ca2027d84e1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_JudicialRulingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LitigationStatusDomain_7a71b6cb-d328-48e2-81da-d1daaf736790" xlink:to="loc_us-gaap_JudicialRulingMember_a1017de5-d102-4bc0-9878-6ca2027d84e1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_e008a663-9faf-429c-b99d-4e19245e23e1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_aa0bb00d-7152-4bcf-abf0-a05cea0b4d60" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_e008a663-9faf-429c-b99d-4e19245e23e1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_e008a663-9faf-429c-b99d-4e19245e23e1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_e008a663-9faf-429c-b99d-4e19245e23e1" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_e008a663-9faf-429c-b99d-4e19245e23e1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_23ab238e-26f5-490a-96bf-30c7e8047483" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_e008a663-9faf-429c-b99d-4e19245e23e1" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_23ab238e-26f5-490a-96bf-30c7e8047483" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BridgeLoanMember_de20c910-c46e-421d-9b2e-49e7740dc3fe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BridgeLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_23ab238e-26f5-490a-96bf-30c7e8047483" xlink:to="loc_us-gaap_BridgeLoanMember_de20c910-c46e-421d-9b2e-49e7740dc3fe" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_8da38f41-4703-416e-b0d5-650e8c8835f2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_d419d9d4-738b-4448-9cc3-642f2094de20" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_8da38f41-4703-416e-b0d5-650e8c8835f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_LossContingencyAccrualPercentageOfCashCollateralRequiredAsGuarantee_8606ddff-af5c-415f-adb4-03afaa0a3a38" xlink:href="livn-20231231.xsd#livn_LossContingencyAccrualPercentageOfCashCollateralRequiredAsGuarantee"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_d419d9d4-738b-4448-9cc3-642f2094de20" xlink:to="loc_livn_LossContingencyAccrualPercentageOfCashCollateralRequiredAsGuarantee_8606ddff-af5c-415f-adb4-03afaa0a3a38" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/BusinessCombinationsNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#BusinessCombinationsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/BusinessCombinationsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_b864eedb-3703-4f54-a7bb-84ac6e4cde3c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_badcf4e2-a6af-4c07-aea4-00eb6392e279" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b864eedb-3703-4f54-a7bb-84ac6e4cde3c" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_badcf4e2-a6af-4c07-aea4-00eb6392e279" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_96f58ddb-3f97-47a8-bc83-177e649be9b9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_badcf4e2-a6af-4c07-aea4-00eb6392e279" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_96f58ddb-3f97-47a8-bc83-177e649be9b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_96f58ddb-3f97-47a8-bc83-177e649be9b9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_96f58ddb-3f97-47a8-bc83-177e649be9b9" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_96f58ddb-3f97-47a8-bc83-177e649be9b9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_0f667801-e59a-4d0a-a69f-8957e31fc768" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeAxis_96f58ddb-3f97-47a8-bc83-177e649be9b9" xlink:to="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_0f667801-e59a-4d0a-a69f-8957e31fc768" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ALungTechnologiesInc.Member_824ab545-a5e3-48ed-bceb-c58d68710bcd" xlink:href="livn-20231231.xsd#livn_ALungTechnologiesInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityMethodInvestmentNonconsolidatedInvesteeDomain_0f667801-e59a-4d0a-a69f-8957e31fc768" xlink:to="loc_livn_ALungTechnologiesInc.Member_824ab545-a5e3-48ed-bceb-c58d68710bcd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_4e37d0d9-8edc-49ce-9ec8-504434b70b25" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_badcf4e2-a6af-4c07-aea4-00eb6392e279" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_4e37d0d9-8edc-49ce-9ec8-504434b70b25" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4e37d0d9-8edc-49ce-9ec8-504434b70b25_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_4e37d0d9-8edc-49ce-9ec8-504434b70b25" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_4e37d0d9-8edc-49ce-9ec8-504434b70b25_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c0a1fe30-bca2-4056-a4d0-06e1153d3375" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_4e37d0d9-8edc-49ce-9ec8-504434b70b25" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c0a1fe30-bca2-4056-a4d0-06e1153d3375" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ALungTechnologiesInc.Member_a6cbd630-f2be-42f7-8c75-f7642a85de99" xlink:href="livn-20231231.xsd#livn_ALungTechnologiesInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_c0a1fe30-bca2-4056-a4d0-06e1153d3375" xlink:to="loc_livn_ALungTechnologiesInc.Member_a6cbd630-f2be-42f7-8c75-f7642a85de99" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3bc9fdd2-91b4-4913-925f-2c18097f0edd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_badcf4e2-a6af-4c07-aea4-00eb6392e279" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3bc9fdd2-91b4-4913-925f-2c18097f0edd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3bc9fdd2-91b4-4913-925f-2c18097f0edd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3bc9fdd2-91b4-4913-925f-2c18097f0edd" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3bc9fdd2-91b4-4913-925f-2c18097f0edd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_371d9838-290a-4c7f-b422-dd9f9d61cef0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3bc9fdd2-91b4-4913-925f-2c18097f0edd" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_371d9838-290a-4c7f-b422-dd9f9d61cef0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_344bf02b-69a5-4221-8378-71dbb3b3be9c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_371d9838-290a-4c7f-b422-dd9f9d61cef0" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_344bf02b-69a5-4221-8378-71dbb3b3be9c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_276072d6-666d-4f3d-9e7f-9b566f8f0b27" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_badcf4e2-a6af-4c07-aea4-00eb6392e279" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_276072d6-666d-4f3d-9e7f-9b566f8f0b27" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_276072d6-666d-4f3d-9e7f-9b566f8f0b27_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_276072d6-666d-4f3d-9e7f-9b566f8f0b27" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_276072d6-666d-4f3d-9e7f-9b566f8f0b27_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_397d3332-e155-4ee3-bff4-6b09d2df92c2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_276072d6-666d-4f3d-9e7f-9b566f8f0b27" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_397d3332-e155-4ee3-bff4-6b09d2df92c2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_17c29243-f522-4ee5-b595-ac47ecf22080" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_397d3332-e155-4ee3-bff4-6b09d2df92c2" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_17c29243-f522-4ee5-b595-ac47ecf22080" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage_c5eecbb9-e78f-45d4-963c-68d6f1bde0de" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b864eedb-3703-4f54-a7bb-84ac6e4cde3c" xlink:to="loc_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireePercentage_c5eecbb9-e78f-45d4-963c-68d6f1bde0de" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_4d20b5cc-07c3-4bcf-a923-f05119744162" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b864eedb-3703-4f54-a7bb-84ac6e4cde3c" xlink:to="loc_us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired_4d20b5cc-07c3-4bcf-a923-f05119744162" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_BusinessCombinationMaximumConsideration_34c636cf-e9f3-4f7c-8ade-32e770466e93" xlink:href="livn-20231231.xsd#livn_BusinessCombinationMaximumConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b864eedb-3703-4f54-a7bb-84ac6e4cde3c" xlink:to="loc_livn_BusinessCombinationMaximumConsideration_34c636cf-e9f3-4f7c-8ade-32e770466e93" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_bda5da08-bcd8-4290-883b-d89d12eaff75" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquireBusinessesGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b864eedb-3703-4f54-a7bb-84ac6e4cde3c" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_bda5da08-bcd8-4290-883b-d89d12eaff75" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_b15997c2-30dc-4fa6-a761-e5cb99042f99" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b864eedb-3703-4f54-a7bb-84ac6e4cde3c" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh_b15997c2-30dc-4fa6-a761-e5cb99042f99" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_BusinessCombinationNoncashConsideration_29f4d384-84f9-4159-bcfa-e3c1f60946cc" xlink:href="livn-20231231.xsd#livn_BusinessCombinationNoncashConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b864eedb-3703-4f54-a7bb-84ac6e4cde3c" xlink:to="loc_livn_BusinessCombinationNoncashConsideration_29f4d384-84f9-4159-bcfa-e3c1f60946cc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_218173e0-13c9-4868-9b90-17348ca8b40a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b864eedb-3703-4f54-a7bb-84ac6e4cde3c" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_218173e0-13c9-4868-9b90-17348ca8b40a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_46633797-9e7a-4877-a4d6-00b1e273b8c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_b864eedb-3703-4f54-a7bb-84ac6e4cde3c" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_46633797-9e7a-4877-a4d6-00b1e273b8c8" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/BusinessCombinationsFairValueofConsiderationTransferredDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#BusinessCombinationsFairValueofConsiderationTransferredDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/BusinessCombinationsFairValueofConsiderationTransferredDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_2f7b144a-48c2-4a01-80de-41b4dc6a0888" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_60bb6bac-4412-4c53-a800-f4cb49ec4a1c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_2f7b144a-48c2-4a01-80de-41b4dc6a0888" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_60bb6bac-4412-4c53-a800-f4cb49ec4a1c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_7afa6783-68e7-485c-8b9a-ca1aea68959e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_60bb6bac-4412-4c53-a800-f4cb49ec4a1c" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_7afa6783-68e7-485c-8b9a-ca1aea68959e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_7afa6783-68e7-485c-8b9a-ca1aea68959e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_7afa6783-68e7-485c-8b9a-ca1aea68959e" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_7afa6783-68e7-485c-8b9a-ca1aea68959e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_283dbd37-ffaf-4119-bd18-0e5d11b09068" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_7afa6783-68e7-485c-8b9a-ca1aea68959e" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_283dbd37-ffaf-4119-bd18-0e5d11b09068" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ALungTechnologiesInc.Member_b1460056-f10b-442b-aba4-a96dd14b6ff1" xlink:href="livn-20231231.xsd#livn_ALungTechnologiesInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_283dbd37-ffaf-4119-bd18-0e5d11b09068" xlink:to="loc_livn_ALungTechnologiesInc.Member_b1460056-f10b-442b-aba4-a96dd14b6ff1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis_5a8841c6-fc9c-4e76-97ba-5ff5dc4d9dfc" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RestatementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_60bb6bac-4412-4c53-a800-f4cb49ec4a1c" xlink:to="loc_srt_RestatementAxis_5a8841c6-fc9c-4e76-97ba-5ff5dc4d9dfc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_5a8841c6-fc9c-4e76-97ba-5ff5dc4d9dfc_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_5a8841c6-fc9c-4e76-97ba-5ff5dc4d9dfc" xlink:to="loc_srt_RestatementDomain_5a8841c6-fc9c-4e76-97ba-5ff5dc4d9dfc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_a1efed8f-f8be-4e11-8f7f-8a50c06304c4" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_5a8841c6-fc9c-4e76-97ba-5ff5dc4d9dfc" xlink:to="loc_srt_RestatementDomain_a1efed8f-f8be-4e11-8f7f-8a50c06304c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioPreviouslyReportedMember_95df623f-326e-4ab8-a112-c4556aecaf78" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScenarioPreviouslyReportedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_a1efed8f-f8be-4e11-8f7f-8a50c06304c4" xlink:to="loc_srt_ScenarioPreviouslyReportedMember_95df623f-326e-4ab8-a112-c4556aecaf78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAdjustmentMember_af1b3441-9cd7-4c25-890e-79c8bdd58bec" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RestatementAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_a1efed8f-f8be-4e11-8f7f-8a50c06304c4" xlink:to="loc_srt_RestatementAdjustmentMember_af1b3441-9cd7-4c25-890e-79c8bdd58bec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_PaymentsToAcquireBusinessCashAndOtherConsideration_699c3c00-7b8b-40bc-a1f7-7351b8883fd4" xlink:href="livn-20231231.xsd#livn_PaymentsToAcquireBusinessCashAndOtherConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_2f7b144a-48c2-4a01-80de-41b4dc6a0888" xlink:to="loc_livn_PaymentsToAcquireBusinessCashAndOtherConsideration_699c3c00-7b8b-40bc-a1f7-7351b8883fd4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_ec5f0c94-6d91-46ae-9148-0e2149cd9ab1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_2f7b144a-48c2-4a01-80de-41b4dc6a0888" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferredLiabilitiesIncurred_ec5f0c94-6d91-46ae-9148-0e2149cd9ab1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_b91c0d44-5b2c-41a0-9c77-738d87ba95a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_2f7b144a-48c2-4a01-80de-41b4dc6a0888" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_b91c0d44-5b2c-41a0-9c77-738d87ba95a5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract_90c02184-1a04-4c5c-9c97-ae06eeb38f11" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_2f7b144a-48c2-4a01-80de-41b4dc6a0888" xlink:to="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract_90c02184-1a04-4c5c-9c97-ae06eeb38f11" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred_8420e6bd-705d-48be-ba8a-754b8fc61b09" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract_90c02184-1a04-4c5c-9c97-ae06eeb38f11" xlink:to="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred_8420e6bd-705d-48be-ba8a-754b8fc61b09" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/BusinessCombinationsPurchasePriceAllocationDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#BusinessCombinationsPurchasePriceAllocationDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/BusinessCombinationsPurchasePriceAllocationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_9235e07f-d75b-411d-be76-d42dacea016f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_2f296627-4f61-4d82-bae0-f18af3195aa9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_9235e07f-d75b-411d-be76-d42dacea016f" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_2f296627-4f61-4d82-bae0-f18af3195aa9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_661dfd6a-7acb-47b9-9e84-04d1de7bd532" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_2f296627-4f61-4d82-bae0-f18af3195aa9" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_661dfd6a-7acb-47b9-9e84-04d1de7bd532" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_661dfd6a-7acb-47b9-9e84-04d1de7bd532_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_661dfd6a-7acb-47b9-9e84-04d1de7bd532" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_661dfd6a-7acb-47b9-9e84-04d1de7bd532_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fb507412-dedc-4549-ad3d-ae4ad0454022" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_661dfd6a-7acb-47b9-9e84-04d1de7bd532" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fb507412-dedc-4549-ad3d-ae4ad0454022" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ALungTechnologiesInc.Member_11303776-e428-4abf-a8bc-e54e291ddeb9" xlink:href="livn-20231231.xsd#livn_ALungTechnologiesInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_fb507412-dedc-4549-ad3d-ae4ad0454022" xlink:to="loc_livn_ALungTechnologiesInc.Member_11303776-e428-4abf-a8bc-e54e291ddeb9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAxis_fa96f228-f770-4c2c-807d-688340583258" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RestatementAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_2f296627-4f61-4d82-bae0-f18af3195aa9" xlink:to="loc_srt_RestatementAxis_fa96f228-f770-4c2c-807d-688340583258" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_fa96f228-f770-4c2c-807d-688340583258_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RestatementAxis_fa96f228-f770-4c2c-807d-688340583258" xlink:to="loc_srt_RestatementDomain_fa96f228-f770-4c2c-807d-688340583258_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementDomain_c9228aec-baae-4a16-81b0-e55ff93d0d0f" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RestatementDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RestatementAxis_fa96f228-f770-4c2c-807d-688340583258" xlink:to="loc_srt_RestatementDomain_c9228aec-baae-4a16-81b0-e55ff93d0d0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScenarioPreviouslyReportedMember_1ea7194c-d366-4c1f-b905-1a8764a85792" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScenarioPreviouslyReportedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_c9228aec-baae-4a16-81b0-e55ff93d0d0f" xlink:to="loc_srt_ScenarioPreviouslyReportedMember_1ea7194c-d366-4c1f-b905-1a8764a85792" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RestatementAdjustmentMember_d78abd11-9641-4560-9626-fafb05f39fa5" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RestatementAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RestatementDomain_c9228aec-baae-4a16-81b0-e55ff93d0d0f" xlink:to="loc_srt_RestatementAdjustmentMember_d78abd11-9641-4560-9626-fafb05f39fa5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_3350b394-f7ca-4c44-8086-1145676b534e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_9235e07f-d75b-411d-be76-d42dacea016f" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_3350b394-f7ca-4c44-8086-1145676b534e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_4083e76a-e656-4fad-aec3-28504667fc2b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_9235e07f-d75b-411d-be76-d42dacea016f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_4083e76a-e656-4fad-aec3-28504667fc2b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_d55515e2-0a60-472e-a415-9f7ddd5fec8f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_9235e07f-d75b-411d-be76-d42dacea016f" xlink:to="loc_us-gaap_Goodwill_d55515e2-0a60-472e-a415-9f7ddd5fec8f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsAndLiabilitiesAssetsAndLiabilitiesNet_6996ab38-07ad-429f-bd5b-5c8f411a1f57" xlink:href="livn-20231231.xsd#livn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsAndLiabilitiesAssetsAndLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_9235e07f-d75b-411d-be76-d42dacea016f" xlink:to="loc_livn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssetsAndLiabilitiesAssetsAndLiabilitiesNet_6996ab38-07ad-429f-bd5b-5c8f411a1f57" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_85d25555-990a-4f8f-87fc-216c73670ef0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_9235e07f-d75b-411d-be76-d42dacea016f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_85d25555-990a-4f8f-87fc-216c73670ef0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract_b07344e3-adf2-4d19-9c7e-a0e50d24b8f7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_9235e07f-d75b-411d-be76-d42dacea016f" xlink:to="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract_b07344e3-adf2-4d19-9c7e-a0e50d24b8f7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles_835805f2-3303-4bf3-9be6-5f840a0990ff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract_b07344e3-adf2-4d19-9c7e-a0e50d24b8f7" xlink:to="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentIntangibles_835805f2-3303-4bf3-9be6-5f840a0990ff" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_5690338c-7ca0-40d6-924b-b49382418469" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract_b07344e3-adf2-4d19-9c7e-a0e50d24b8f7" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_5690338c-7ca0-40d6-924b-b49382418469" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherAssetsAndLiabilitiesNet_e7c3a4e2-30e0-4cde-8f86-654ee06c9895" xlink:href="livn-20231231.xsd#livn_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherAssetsAndLiabilitiesNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract_b07344e3-adf2-4d19-9c7e-a0e50d24b8f7" xlink:to="loc_livn_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentOtherAssetsAndLiabilitiesNet_e7c3a4e2-30e0-4cde-8f86-654ee06c9895" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred_9fa89ec9-f2b5-47e7-bcd4-5e93597eff26" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentsAbstract_b07344e3-adf2-4d19-9c7e-a0e50d24b8f7" xlink:to="loc_us-gaap_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentConsiderationTransferred_9fa89ec9-f2b5-47e7-bcd4-5e93597eff26" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/BusinessCombinationsSalesbasedEarnoutDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#BusinessCombinationsSalesbasedEarnoutDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/BusinessCombinationsSalesbasedEarnoutDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_227c4c37-0a13-4539-bd3a-d6fd6a75d2e2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_6f6f9bb8-cdb3-4afe-a440-ffda2c7a8249" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_227c4c37-0a13-4539-bd3a-d6fd6a75d2e2" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_6f6f9bb8-cdb3-4afe-a440-ffda2c7a8249" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_c2fd37ab-2552-4f70-b245-9aa55c14e597" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_6f6f9bb8-cdb3-4afe-a440-ffda2c7a8249" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_c2fd37ab-2552-4f70-b245-9aa55c14e597" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_c2fd37ab-2552-4f70-b245-9aa55c14e597_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_c2fd37ab-2552-4f70-b245-9aa55c14e597" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_c2fd37ab-2552-4f70-b245-9aa55c14e597_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_c2f99721-76ec-42f3-b601-67d82499bdaa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_c2fd37ab-2552-4f70-b245-9aa55c14e597" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_c2f99721-76ec-42f3-b601-67d82499bdaa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputRiskFreeInterestRateMember_756593f3-ed2f-4b9b-b44e-f701075f1378" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputRiskFreeInterestRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_c2f99721-76ec-42f3-b601-67d82499bdaa" xlink:to="loc_us-gaap_MeasurementInputRiskFreeInterestRateMember_756593f3-ed2f-4b9b-b44e-f701075f1378" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputEntityCreditRiskMember_fb64dd2a-d860-48ea-967b-7817ecfb0544" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputEntityCreditRiskMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_c2f99721-76ec-42f3-b601-67d82499bdaa" xlink:to="loc_us-gaap_MeasurementInputEntityCreditRiskMember_fb64dd2a-d860-48ea-967b-7817ecfb0544" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputPriceVolatilityMember_a320b9b0-90be-4e8a-b895-0d7d00bbdb91" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputPriceVolatilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_c2f99721-76ec-42f3-b601-67d82499bdaa" xlink:to="loc_us-gaap_MeasurementInputPriceVolatilityMember_a320b9b0-90be-4e8a-b895-0d7d00bbdb91" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3965910b-df3e-4538-ad9e-664462a0a54c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_6f6f9bb8-cdb3-4afe-a440-ffda2c7a8249" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3965910b-df3e-4538-ad9e-664462a0a54c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3965910b-df3e-4538-ad9e-664462a0a54c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3965910b-df3e-4538-ad9e-664462a0a54c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_3965910b-df3e-4538-ad9e-664462a0a54c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9569056a-19ec-4df7-923f-fc70bd28b942" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_3965910b-df3e-4538-ad9e-664462a0a54c" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9569056a-19ec-4df7-923f-fc70bd28b942" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_47a7b1ad-a605-4be4-a895-759311784e36" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_9569056a-19ec-4df7-923f-fc70bd28b942" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_47a7b1ad-a605-4be4-a895-759311784e36" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_1bb5a114-85f9-4c72-b5fc-ea178d3df258" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_6f6f9bb8-cdb3-4afe-a440-ffda2c7a8249" xlink:to="loc_srt_RangeAxis_1bb5a114-85f9-4c72-b5fc-ea178d3df258" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_1bb5a114-85f9-4c72-b5fc-ea178d3df258_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_1bb5a114-85f9-4c72-b5fc-ea178d3df258" xlink:to="loc_srt_RangeMember_1bb5a114-85f9-4c72-b5fc-ea178d3df258_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_6f01579b-91e6-48e6-ac66-880a5e499071" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_1bb5a114-85f9-4c72-b5fc-ea178d3df258" xlink:to="loc_srt_RangeMember_6f01579b-91e6-48e6-ac66-880a5e499071" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_0834f6d9-5b86-4326-aa0b-8def8763d2e6" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6f01579b-91e6-48e6-ac66-880a5e499071" xlink:to="loc_srt_MinimumMember_0834f6d9-5b86-4326-aa0b-8def8763d2e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_07d0db06-af50-4d3c-a36e-edf325ccfac6" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6f01579b-91e6-48e6-ac66-880a5e499071" xlink:to="loc_srt_MaximumMember_07d0db06-af50-4d3c-a36e-edf325ccfac6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_2c807176-3c24-4bce-a339-69584e80ed49" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_6f6f9bb8-cdb3-4afe-a440-ffda2c7a8249" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_2c807176-3c24-4bce-a339-69584e80ed49" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2c807176-3c24-4bce-a339-69584e80ed49_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_2c807176-3c24-4bce-a339-69584e80ed49" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_2c807176-3c24-4bce-a339-69584e80ed49_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1b4254a9-0b09-4962-85b6-a134a834219d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_2c807176-3c24-4bce-a339-69584e80ed49" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1b4254a9-0b09-4962-85b6-a134a834219d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ALungTechnologiesInc.Member_c5e8ed27-0966-47cc-b8a8-1540761c9a9f" xlink:href="livn-20231231.xsd#livn_ALungTechnologiesInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_1b4254a9-0b09-4962-85b6-a134a834219d" xlink:to="loc_livn_ALungTechnologiesInc.Member_c5e8ed27-0966-47cc-b8a8-1540761c9a9f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_b8afb1d6-369b-4d72-9831-4f398648550b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_227c4c37-0a13-4539-bd3a-d6fd6a75d2e2" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_b8afb1d6-369b-4d72-9831-4f398648550b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput_92de5c6a-7b0d-44e2-acb5-d4dd06e0bf8c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_227c4c37-0a13-4539-bd3a-d6fd6a75d2e2" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput_92de5c6a-7b0d-44e2-acb5-d4dd06e0bf8c" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/DivestitureofHeartValveBusinessNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#DivestitureofHeartValveBusinessNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/DivestitureofHeartValveBusinessNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4a358ef3-b14f-4dda-af52-19e135645818" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_5d781496-85b8-474d-b036-dcbfd78ebc60" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4a358ef3-b14f-4dda-af52-19e135645818" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_5d781496-85b8-474d-b036-dcbfd78ebc60" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b9d87614-899d-45fb-8639-64ffac58a030" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_5d781496-85b8-474d-b036-dcbfd78ebc60" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b9d87614-899d-45fb-8639-64ffac58a030" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b9d87614-899d-45fb-8639-64ffac58a030_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b9d87614-899d-45fb-8639-64ffac58a030" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_b9d87614-899d-45fb-8639-64ffac58a030_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_bb5f0a48-d0e9-466f-8bf6-af220b375b54" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_b9d87614-899d-45fb-8639-64ffac58a030" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_bb5f0a48-d0e9-466f-8bf6-af220b375b54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_HeartValvesMember_e553f3b8-e7fb-4b24-b727-4d9e70e71da5" xlink:href="livn-20231231.xsd#livn_HeartValvesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_bb5f0a48-d0e9-466f-8bf6-af220b375b54" xlink:to="loc_livn_HeartValvesMember_e553f3b8-e7fb-4b24-b727-4d9e70e71da5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_3e895f9d-7c3a-4c4c-ba1f-bbbd8fb07c85" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_5d781496-85b8-474d-b036-dcbfd78ebc60" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_3e895f9d-7c3a-4c4c-ba1f-bbbd8fb07c85" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_3e895f9d-7c3a-4c4c-ba1f-bbbd8fb07c85_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_3e895f9d-7c3a-4c4c-ba1f-bbbd8fb07c85" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_3e895f9d-7c3a-4c4c-ba1f-bbbd8fb07c85_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_9db7f74f-f8dc-46e4-85b8-aeea16b5cb25" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_3e895f9d-7c3a-4c4c-ba1f-bbbd8fb07c85" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_9db7f74f-f8dc-46e4-85b8-aeea16b5cb25" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_6fc09f8f-1513-474d-883d-d3be113b9236" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DiscontinuedOperationsDisposedOfBySaleMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_9db7f74f-f8dc-46e4-85b8-aeea16b5cb25" xlink:to="loc_us-gaap_DiscontinuedOperationsDisposedOfBySaleMember_6fc09f8f-1513-474d-883d-d3be113b9236" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_aaba89ef-b75b-4f41-8269-244ecf050ee9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4a358ef3-b14f-4dda-af52-19e135645818" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_aaba89ef-b75b-4f41-8269-244ecf050ee9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DisposalGroupSaleAndPurchaseDeferralPeriod_b1ed9b24-d7b7-4002-9150-22166b98d56c" xlink:href="livn-20231231.xsd#livn_DisposalGroupSaleAndPurchaseDeferralPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4a358ef3-b14f-4dda-af52-19e135645818" xlink:to="loc_livn_DisposalGroupSaleAndPurchaseDeferralPeriod_b1ed9b24-d7b7-4002-9150-22166b98d56c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets_96e2e338-a214-44c1-ae9e-e69c8ca0716d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4a358ef3-b14f-4dda-af52-19e135645818" xlink:to="loc_us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets_96e2e338-a214-44c1-ae9e-e69c8ca0716d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DisposalGroupPaymentForWorkingCapitalAndIndebtednessAdjustments_b5963a48-dfd4-4b85-9e3c-300194f983de" xlink:href="livn-20231231.xsd#livn_DisposalGroupPaymentForWorkingCapitalAndIndebtednessAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4a358ef3-b14f-4dda-af52-19e135645818" xlink:to="loc_livn_DisposalGroupPaymentForWorkingCapitalAndIndebtednessAdjustments_b5963a48-dfd4-4b85-9e3c-300194f983de" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnSaleOfBusiness_52d46bb4-63a4-4ff5-b59a-316c3199f1c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnSaleOfBusiness"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4a358ef3-b14f-4dda-af52-19e135645818" xlink:to="loc_us-gaap_GainLossOnSaleOfBusiness_52d46bb4-63a4-4ff5-b59a-316c3199f1c8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIncome_f61bb8c4-06f4-4d9e-8d19-30027373c520" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_4a358ef3-b14f-4dda-af52-19e135645818" xlink:to="loc_us-gaap_OtherIncome_f61bb8c4-06f4-4d9e-8d19-30027373c520" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/RestructuringNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#RestructuringNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/RestructuringNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_9e2ea22c-5c35-4c5a-a8fd-0968d34cc324" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_fdc57139-2de6-425c-a68b-89282c2de0a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9e2ea22c-5c35-4c5a-a8fd-0968d34cc324" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_fdc57139-2de6-425c-a68b-89282c2de0a1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_3936a07d-82cc-42db-afb8-cad4efb1514b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_fdc57139-2de6-425c-a68b-89282c2de0a1" xlink:to="loc_us-gaap_RestructuringPlanAxis_3936a07d-82cc-42db-afb8-cad4efb1514b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_3936a07d-82cc-42db-afb8-cad4efb1514b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_3936a07d-82cc-42db-afb8-cad4efb1514b" xlink:to="loc_us-gaap_RestructuringPlanDomain_3936a07d-82cc-42db-afb8-cad4efb1514b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_77b01ef0-2b49-427b-a927-e29785109839" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_3936a07d-82cc-42db-afb8-cad4efb1514b" xlink:to="loc_us-gaap_RestructuringPlanDomain_77b01ef0-2b49-427b-a927-e29785109839" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ReorganizationPlan2020Member_900a23e0-0e43-422d-9ca6-4375602c415d" xlink:href="livn-20231231.xsd#livn_ReorganizationPlan2020Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_77b01ef0-2b49-427b-a927-e29785109839" xlink:to="loc_livn_ReorganizationPlan2020Member_900a23e0-0e43-422d-9ca6-4375602c415d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_A2024RestructuringPlanMember_b52b6a44-0337-4705-a26c-3fe05c2497c9" xlink:href="livn-20231231.xsd#livn_A2024RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_77b01ef0-2b49-427b-a927-e29785109839" xlink:to="loc_livn_A2024RestructuringPlanMember_b52b6a44-0337-4705-a26c-3fe05c2497c9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_A2022RestructuringPlanMember_9b352e2b-c79a-42ef-835c-ece69152fa7b" xlink:href="livn-20231231.xsd#livn_A2022RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_77b01ef0-2b49-427b-a927-e29785109839" xlink:to="loc_livn_A2022RestructuringPlanMember_9b352e2b-c79a-42ef-835c-ece69152fa7b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_31e3aa29-6665-4b5f-b43a-366102d415ee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_fdc57139-2de6-425c-a68b-89282c2de0a1" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_31e3aa29-6665-4b5f-b43a-366102d415ee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_31e3aa29-6665-4b5f-b43a-366102d415ee_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_31e3aa29-6665-4b5f-b43a-366102d415ee" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_31e3aa29-6665-4b5f-b43a-366102d415ee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_9b9ee0e5-0fdb-44d5-bd84-a703eeb04abc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_31e3aa29-6665-4b5f-b43a-366102d415ee" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_9b9ee0e5-0fdb-44d5-bd84-a703eeb04abc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_f889c875-1c8a-4a38-ad7d-89ee52c68d0c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_9b9ee0e5-0fdb-44d5-bd84-a703eeb04abc" xlink:to="loc_us-gaap_EmployeeSeveranceMember_f889c875-1c8a-4a38-ad7d-89ee52c68d0c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractTerminationMember_06dd67c6-cc06-40f1-b78e-def0a4c2bb19" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ContractTerminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_9b9ee0e5-0fdb-44d5-bd84-a703eeb04abc" xlink:to="loc_us-gaap_ContractTerminationMember_06dd67c6-cc06-40f1-b78e-def0a4c2bb19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_f8a21278-2322-4db3-b8e8-4ddaec56d97d" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_fdc57139-2de6-425c-a68b-89282c2de0a1" xlink:to="loc_srt_RangeAxis_f8a21278-2322-4db3-b8e8-4ddaec56d97d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f8a21278-2322-4db3-b8e8-4ddaec56d97d_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_f8a21278-2322-4db3-b8e8-4ddaec56d97d" xlink:to="loc_srt_RangeMember_f8a21278-2322-4db3-b8e8-4ddaec56d97d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_9f720c3d-6a47-48b1-949f-584d4f4274bc" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_f8a21278-2322-4db3-b8e8-4ddaec56d97d" xlink:to="loc_srt_RangeMember_9f720c3d-6a47-48b1-949f-584d4f4274bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_5b06b15f-bfb9-4ff9-949b-b9511e397c9d" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_9f720c3d-6a47-48b1-949f-584d4f4274bc" xlink:to="loc_srt_MinimumMember_5b06b15f-bfb9-4ff9-949b-b9511e397c9d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_d14b429f-db9d-4605-aeb7-8842317acf17" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_9f720c3d-6a47-48b1-949f-584d4f4274bc" xlink:to="loc_srt_MaximumMember_d14b429f-db9d-4605-aeb7-8842317acf17" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_cd6306eb-82ae-48cc-92a9-2ec3ecbdbf1e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9e2ea22c-5c35-4c5a-a8fd-0968d34cc324" xlink:to="loc_us-gaap_RestructuringCharges_cd6306eb-82ae-48cc-92a9-2ec3ecbdbf1e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_4f7b7a6c-86b2-4375-a751-101200978039" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9e2ea22c-5c35-4c5a-a8fd-0968d34cc324" xlink:to="loc_us-gaap_InventoryWriteDown_4f7b7a6c-86b2-4375-a751-101200978039" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_RestructuringAndRelatedCostSeveranceCostsNumberOfEmployees_3d65ac52-622e-4ec2-88c5-3d198cf2715a" xlink:href="livn-20231231.xsd#livn_RestructuringAndRelatedCostSeveranceCostsNumberOfEmployees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9e2ea22c-5c35-4c5a-a8fd-0968d34cc324" xlink:to="loc_livn_RestructuringAndRelatedCostSeveranceCostsNumberOfEmployees_3d65ac52-622e-4ec2-88c5-3d198cf2715a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1_0efa7a15-d4c8-4056-8035-ad39631de274" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9e2ea22c-5c35-4c5a-a8fd-0968d34cc324" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1_0efa7a15-d4c8-4056-8035-ad39631de274" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_6cc52da7-8004-4b25-8608-4ad94fac5e2f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9e2ea22c-5c35-4c5a-a8fd-0968d34cc324" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_6cc52da7-8004-4b25-8608-4ad94fac5e2f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_e02650fb-2386-4714-80a4-3fc150801cf3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9e2ea22c-5c35-4c5a-a8fd-0968d34cc324" xlink:to="loc_us-gaap_RestructuringReserve_e02650fb-2386-4714-80a4-3fc150801cf3" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_535307e2-29f1-4f63-906a-8436d054de69" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9e2ea22c-5c35-4c5a-a8fd-0968d34cc324" xlink:to="loc_us-gaap_PaymentsForRestructuring_535307e2-29f1-4f63-906a-8436d054de69" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/RestructuringScheduleofImpairmentsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#RestructuringScheduleofImpairmentsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/RestructuringScheduleofImpairmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_9832f05b-91b7-4eba-9342-fa412dc52e14" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_906b2fcc-a653-4a4a-9ecb-9f5bbd0e0258" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9832f05b-91b7-4eba-9342-fa412dc52e14" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_906b2fcc-a653-4a4a-9ecb-9f5bbd0e0258" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_36dc26a8-6cf2-46a0-a2ac-d6b6dc8f3ca2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_906b2fcc-a653-4a4a-9ecb-9f5bbd0e0258" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_36dc26a8-6cf2-46a0-a2ac-d6b6dc8f3ca2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_36dc26a8-6cf2-46a0-a2ac-d6b6dc8f3ca2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_36dc26a8-6cf2-46a0-a2ac-d6b6dc8f3ca2" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_36dc26a8-6cf2-46a0-a2ac-d6b6dc8f3ca2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ee089f4b-aa1e-4ddf-9c0c-02e19e8d2971" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_36dc26a8-6cf2-46a0-a2ac-d6b6dc8f3ca2" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ee089f4b-aa1e-4ddf-9c0c-02e19e8d2971" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_a5ab0329-7f22-4e33-9416-9468d282cd6c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ee089f4b-aa1e-4ddf-9c0c-02e19e8d2971" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_a5ab0329-7f22-4e33-9416-9468d282cd6c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_e03ec961-cbe6-460f-84da-4a02ce474a08" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_ee089f4b-aa1e-4ddf-9c0c-02e19e8d2971" xlink:to="loc_us-gaap_TradeNamesMember_e03ec961-cbe6-460f-84da-4a02ce474a08" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_75e84d5c-d9e8-46e7-b30c-43de4cca2467" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ImpairmentOfIntangibleAssetsFinitelived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9832f05b-91b7-4eba-9342-fa412dc52e14" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_75e84d5c-d9e8-46e7-b30c-43de4cca2467" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_88bbb8fe-6b1b-4b7e-80dc-9fa944896085" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9832f05b-91b7-4eba-9342-fa412dc52e14" xlink:to="loc_us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf_88bbb8fe-6b1b-4b7e-80dc-9fa944896085" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseImpairmentLoss_b01b9aec-e5e4-4e2c-b0d8-3cbd466b9b52" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLeaseImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9832f05b-91b7-4eba-9342-fa412dc52e14" xlink:to="loc_us-gaap_OperatingLeaseImpairmentLoss_b01b9aec-e5e4-4e2c-b0d8-3cbd466b9b52" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges_9a0471b3-e921-4d17-afa2-212ec93bba99" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_9832f05b-91b7-4eba-9342-fa412dc52e14" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges_9a0471b3-e921-4d17-afa2-212ec93bba99" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/RestructuringReconciliationofAccrualsandOtherReservesRelatedtoRestructuringDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#RestructuringReconciliationofAccrualsandOtherReservesRelatedtoRestructuringDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/RestructuringReconciliationofAccrualsandOtherReservesRelatedtoRestructuringDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_fb5b9630-6e19-46d7-b8e2-07e9954e1446" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_f04e9629-2647-4be0-a3a3-79b940c13092" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_fb5b9630-6e19-46d7-b8e2-07e9954e1446" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_f04e9629-2647-4be0-a3a3-79b940c13092" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_e10da389-2e64-4d32-a110-db197ba07f94" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_f04e9629-2647-4be0-a3a3-79b940c13092" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_e10da389-2e64-4d32-a110-db197ba07f94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_e10da389-2e64-4d32-a110-db197ba07f94_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_e10da389-2e64-4d32-a110-db197ba07f94" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_e10da389-2e64-4d32-a110-db197ba07f94_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_b2d0cb5c-94fe-489a-8f5c-7d18ce7ca420" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_e10da389-2e64-4d32-a110-db197ba07f94" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_b2d0cb5c-94fe-489a-8f5c-7d18ce7ca420" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_7faf3b49-3cb9-4192-9fde-446d2359ab4d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_b2d0cb5c-94fe-489a-8f5c-7d18ce7ca420" xlink:to="loc_us-gaap_EmployeeSeveranceMember_7faf3b49-3cb9-4192-9fde-446d2359ab4d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractTerminationMember_ecf047ab-f038-415b-a10b-1429b0a3e7b7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ContractTerminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_b2d0cb5c-94fe-489a-8f5c-7d18ce7ca420" xlink:to="loc_us-gaap_ContractTerminationMember_ecf047ab-f038-415b-a10b-1429b0a3e7b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveRollForward_83d0921d-8b7b-42e0-9c16-ab99219f2c3e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserveRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_fb5b9630-6e19-46d7-b8e2-07e9954e1446" xlink:to="loc_us-gaap_RestructuringReserveRollForward_83d0921d-8b7b-42e0-9c16-ab99219f2c3e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_a1a54152-8aab-4cfe-a9a7-4838c95c916e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_83d0921d-8b7b-42e0-9c16-ab99219f2c3e" xlink:to="loc_us-gaap_RestructuringReserve_a1a54152-8aab-4cfe-a9a7-4838c95c916e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_c1fc100e-fb56-4b94-99b8-664dc6677371" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_83d0921d-8b7b-42e0-9c16-ab99219f2c3e" xlink:to="loc_us-gaap_RestructuringCharges_c1fc100e-fb56-4b94-99b8-664dc6677371" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_016a024d-331f-40dd-8a72-2e5d5f1ea877" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_83d0921d-8b7b-42e0-9c16-ab99219f2c3e" xlink:to="loc_us-gaap_PaymentsForRestructuring_016a024d-331f-40dd-8a72-2e5d5f1ea877" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_a2cd6df4-f021-41f5-a664-d30d01d80eb3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringReserve"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_efd6d5e5-5ff3-4dce-8c57-0ba28b4ddcad" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringAndRelatedCostCostIncurredToDate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_fb5b9630-6e19-46d7-b8e2-07e9954e1446" xlink:to="loc_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_efd6d5e5-5ff3-4dce-8c57-0ba28b4ddcad" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/RestructuringRestructuringExpensebyReportableSegmentDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#RestructuringRestructuringExpensebyReportableSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/RestructuringRestructuringExpensebyReportableSegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_1fd58681-12c7-4924-80d8-7b6c6fd3bdd6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_c33d2fb1-e9ef-40bf-8180-f2b7dded1f1b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_1fd58681-12c7-4924-80d8-7b6c6fd3bdd6" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_c33d2fb1-e9ef-40bf-8180-f2b7dded1f1b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_2300941d-c9e5-4a0d-9024-a8eee692ef15" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_c33d2fb1-e9ef-40bf-8180-f2b7dded1f1b" xlink:to="loc_srt_ConsolidationItemsAxis_2300941d-c9e5-4a0d-9024-a8eee692ef15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_2300941d-c9e5-4a0d-9024-a8eee692ef15_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_2300941d-c9e5-4a0d-9024-a8eee692ef15" xlink:to="loc_srt_ConsolidationItemsDomain_2300941d-c9e5-4a0d-9024-a8eee692ef15_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_840fdd04-ae3b-45b3-b29e-191890361a89" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_2300941d-c9e5-4a0d-9024-a8eee692ef15" xlink:to="loc_srt_ConsolidationItemsDomain_840fdd04-ae3b-45b3-b29e-191890361a89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_00ec66bf-9020-4a16-b7d7-3043a0e62b0f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_840fdd04-ae3b-45b3-b29e-191890361a89" xlink:to="loc_us-gaap_OperatingSegmentsMember_00ec66bf-9020-4a16-b7d7-3043a0e62b0f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_529ea0da-0494-4d43-bf99-bba4cae0401e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_840fdd04-ae3b-45b3-b29e-191890361a89" xlink:to="loc_us-gaap_CorporateNonSegmentMember_529ea0da-0494-4d43-bf99-bba4cae0401e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_45bcdc48-ded7-44bc-871d-73fc3feaee9c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_c33d2fb1-e9ef-40bf-8180-f2b7dded1f1b" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_45bcdc48-ded7-44bc-871d-73fc3feaee9c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_45bcdc48-ded7-44bc-871d-73fc3feaee9c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_45bcdc48-ded7-44bc-871d-73fc3feaee9c" xlink:to="loc_us-gaap_SegmentDomain_45bcdc48-ded7-44bc-871d-73fc3feaee9c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_a54d7633-5d4e-46a0-9494-f102f114b739" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_45bcdc48-ded7-44bc-871d-73fc3feaee9c" xlink:to="loc_us-gaap_SegmentDomain_a54d7633-5d4e-46a0-9494-f102f114b739" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CardiopulmonarySegmentMember_08d37875-afd8-4b3b-8665-fad051fca325" xlink:href="livn-20231231.xsd#livn_CardiopulmonarySegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a54d7633-5d4e-46a0-9494-f102f114b739" xlink:to="loc_livn_CardiopulmonarySegmentMember_08d37875-afd8-4b3b-8665-fad051fca325" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_NeuromodulationSegmentMember_b41ab84d-6e6a-455c-a16c-4ff396459b7b" xlink:href="livn-20231231.xsd#livn_NeuromodulationSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a54d7633-5d4e-46a0-9494-f102f114b739" xlink:to="loc_livn_NeuromodulationSegmentMember_b41ab84d-6e6a-455c-a16c-4ff396459b7b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_AdvancedCirculatorySupportSegmentMember_2e020b0a-889f-4528-9196-573d4dce1fab" xlink:href="livn-20231231.xsd#livn_AdvancedCirculatorySupportSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_a54d7633-5d4e-46a0-9494-f102f114b739" xlink:to="loc_livn_AdvancedCirculatorySupportSegmentMember_2e020b0a-889f-4528-9196-573d4dce1fab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_a08c360f-5f55-46ff-bb66-4c823c3968e6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_1fd58681-12c7-4924-80d8-7b6c6fd3bdd6" xlink:to="loc_us-gaap_RestructuringCharges_a08c360f-5f55-46ff-bb66-4c823c3968e6" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/GoodwillandIntangibleAssetsFiniteLivedandIndefiniteLivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#GoodwillandIntangibleAssetsFiniteLivedandIndefiniteLivedIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/GoodwillandIntangibleAssetsFiniteLivedandIndefiniteLivedIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_77604e73-060e-4e65-9928-63963808b3eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_50a75c04-d927-41c9-bcd3-621ebdf9287d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_77604e73-060e-4e65-9928-63963808b3eb" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_50a75c04-d927-41c9-bcd3-621ebdf9287d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_61cae64a-c0df-4c61-bb90-eb128e89355d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_50a75c04-d927-41c9-bcd3-621ebdf9287d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_61cae64a-c0df-4c61-bb90-eb128e89355d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_61cae64a-c0df-4c61-bb90-eb128e89355d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_61cae64a-c0df-4c61-bb90-eb128e89355d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_61cae64a-c0df-4c61-bb90-eb128e89355d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_92f06e32-f791-4070-8c26-e3fef1322bab" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_61cae64a-c0df-4c61-bb90-eb128e89355d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_92f06e32-f791-4070-8c26-e3fef1322bab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_44ca20e6-fcbb-4e96-b294-38f5e867d12f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_92f06e32-f791-4070-8c26-e3fef1322bab" xlink:to="loc_us-gaap_CustomerRelationshipsMember_44ca20e6-fcbb-4e96-b294-38f5e867d12f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_bbc8d6e0-b70e-4cb9-860d-4b6ab675b9f0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_92f06e32-f791-4070-8c26-e3fef1322bab" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_bbc8d6e0-b70e-4cb9-860d-4b6ab675b9f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_2684f607-2a6b-4aba-928c-b9b36a6c5bf2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_92f06e32-f791-4070-8c26-e3fef1322bab" xlink:to="loc_us-gaap_TradeNamesMember_2684f607-2a6b-4aba-928c-b9b36a6c5bf2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_488a8203-b681-4400-b11e-a31503ef44c2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherIntangibleAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_92f06e32-f791-4070-8c26-e3fef1322bab" xlink:to="loc_us-gaap_OtherIntangibleAssetsMember_488a8203-b681-4400-b11e-a31503ef44c2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_4608160d-86e3-449f-823a-fbcba075eab4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_77604e73-060e-4e65-9928-63963808b3eb" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_4608160d-86e3-449f-823a-fbcba075eab4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_d2dd5205-323b-4f0a-9fe1-f54b1f0d143f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_77604e73-060e-4e65-9928-63963808b3eb" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_d2dd5205-323b-4f0a-9fe1-f54b1f0d143f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_84c29198-0cfc-4688-b3d7-0ea9d705a820" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_77604e73-060e-4e65-9928-63963808b3eb" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_84c29198-0cfc-4688-b3d7-0ea9d705a820" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_253101a3-1e70-493b-adae-0a66d4f53601" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_774c1c29-7c6c-4f99-9072-ae020c0c636b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_253101a3-1e70-493b-adae-0a66d4f53601" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_774c1c29-7c6c-4f99-9072-ae020c0c636b" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_fa2e58fa-6d4d-4063-8350-997b6be250a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_774c1c29-7c6c-4f99-9072-ae020c0c636b" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_fa2e58fa-6d4d-4063-8350-997b6be250a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_fa2e58fa-6d4d-4063-8350-997b6be250a5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_fa2e58fa-6d4d-4063-8350-997b6be250a5" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_fa2e58fa-6d4d-4063-8350-997b6be250a5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_255b51a8-307b-4cd5-8330-83406a62268c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_fa2e58fa-6d4d-4063-8350-997b6be250a5" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_255b51a8-307b-4cd5-8330-83406a62268c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InProcessResearchAndDevelopmentMember_71e2e428-d678-44cc-9619-6c5cd407b29e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InProcessResearchAndDevelopmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_255b51a8-307b-4cd5-8330-83406a62268c" xlink:to="loc_us-gaap_InProcessResearchAndDevelopmentMember_71e2e428-d678-44cc-9619-6c5cd407b29e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_e89e446d-bafd-4e2b-8c73-9f53812327d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_253101a3-1e70-493b-adae-0a66d4f53601" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_e89e446d-bafd-4e2b-8c73-9f53812327d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_88fbe932-f695-45df-acfd-6ec93b85e6d4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_253101a3-1e70-493b-adae-0a66d4f53601" xlink:to="loc_us-gaap_Goodwill_88fbe932-f695-45df-acfd-6ec93b85e6d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_2db1812f-25ab-4602-bb6b-b07bf55a893e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IntangibleAssetsNetIncludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_253101a3-1e70-493b-adae-0a66d4f53601" xlink:to="loc_us-gaap_IntangibleAssetsNetIncludingGoodwill_2db1812f-25ab-4602-bb6b-b07bf55a893e" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/GoodwillandIntangibleAssetsAmortizationPeriodsforFinitelivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#GoodwillandIntangibleAssetsAmortizationPeriodsforFinitelivedIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/GoodwillandIntangibleAssetsAmortizationPeriodsforFinitelivedIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_eafcaef4-49f9-459f-bf35-edf618bcaca6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_960414f1-1202-46ad-ad6d-3b4a23f57172" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_eafcaef4-49f9-459f-bf35-edf618bcaca6" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_960414f1-1202-46ad-ad6d-3b4a23f57172" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_59fd784f-5e7c-4ca7-930b-61f176719260" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_960414f1-1202-46ad-ad6d-3b4a23f57172" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_59fd784f-5e7c-4ca7-930b-61f176719260" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_59fd784f-5e7c-4ca7-930b-61f176719260_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_59fd784f-5e7c-4ca7-930b-61f176719260" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_59fd784f-5e7c-4ca7-930b-61f176719260_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a9f5b663-9fb1-4aac-9092-b088b753be1f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_59fd784f-5e7c-4ca7-930b-61f176719260" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a9f5b663-9fb1-4aac-9092-b088b753be1f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_39f5dfca-10ec-46d6-9927-78b51ad742eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a9f5b663-9fb1-4aac-9092-b088b753be1f" xlink:to="loc_us-gaap_CustomerRelationshipsMember_39f5dfca-10ec-46d6-9927-78b51ad742eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_f5cba389-81de-4d19-9d84-ccb38639123b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a9f5b663-9fb1-4aac-9092-b088b753be1f" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_f5cba389-81de-4d19-9d84-ccb38639123b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_e069ccb8-9368-400d-9d72-ce612b7dcd10" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_960414f1-1202-46ad-ad6d-3b4a23f57172" xlink:to="loc_srt_RangeAxis_e069ccb8-9368-400d-9d72-ce612b7dcd10" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_e069ccb8-9368-400d-9d72-ce612b7dcd10_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_e069ccb8-9368-400d-9d72-ce612b7dcd10" xlink:to="loc_srt_RangeMember_e069ccb8-9368-400d-9d72-ce612b7dcd10_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_6bdc4ab7-d9da-4db3-95d8-3cca4e3bfc84" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_e069ccb8-9368-400d-9d72-ce612b7dcd10" xlink:to="loc_srt_RangeMember_6bdc4ab7-d9da-4db3-95d8-3cca4e3bfc84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_c049038d-1c5d-469d-a939-366f690ab468" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6bdc4ab7-d9da-4db3-95d8-3cca4e3bfc84" xlink:to="loc_srt_MinimumMember_c049038d-1c5d-469d-a939-366f690ab468" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_1bfa8641-0ce4-47e4-b9bc-245d259e929b" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6bdc4ab7-d9da-4db3-95d8-3cca4e3bfc84" xlink:to="loc_srt_MaximumMember_1bfa8641-0ce4-47e4-b9bc-245d259e929b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_66dc08ce-fb56-44c3-9e01-80e0c84b5120" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_eafcaef4-49f9-459f-bf35-edf618bcaca6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_66dc08ce-fb56-44c3-9e01-80e0c84b5120" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/GoodwillandIntangibleAssetsNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#GoodwillandIntangibleAssetsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/GoodwillandIntangibleAssetsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_bec5edfd-f7b5-455e-994e-480a7375239f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_4386c639-b76e-4e99-b9e0-04f2df3a2dc0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_bec5edfd-f7b5-455e-994e-480a7375239f" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_4386c639-b76e-4e99-b9e0-04f2df3a2dc0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_2f7b9a7e-0862-43b8-87d2-af29476b2fa1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_4386c639-b76e-4e99-b9e0-04f2df3a2dc0" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_2f7b9a7e-0862-43b8-87d2-af29476b2fa1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_2f7b9a7e-0862-43b8-87d2-af29476b2fa1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2f7b9a7e-0862-43b8-87d2-af29476b2fa1" xlink:to="loc_us-gaap_SegmentDomain_2f7b9a7e-0862-43b8-87d2-af29476b2fa1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_3309da43-68d9-4e43-a88c-9808a05cfbb6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_2f7b9a7e-0862-43b8-87d2-af29476b2fa1" xlink:to="loc_us-gaap_SegmentDomain_3309da43-68d9-4e43-a88c-9808a05cfbb6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CardiovascularSegmentMember_4a87474b-3f09-42f1-80e0-4ff7439bcbfb" xlink:href="livn-20231231.xsd#livn_CardiovascularSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3309da43-68d9-4e43-a88c-9808a05cfbb6" xlink:to="loc_livn_CardiovascularSegmentMember_4a87474b-3f09-42f1-80e0-4ff7439bcbfb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_NeuromodulationSegmentMember_eabb6041-572b-42f5-8b1e-bf392cadf645" xlink:href="livn-20231231.xsd#livn_NeuromodulationSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_3309da43-68d9-4e43-a88c-9808a05cfbb6" xlink:to="loc_livn_NeuromodulationSegmentMember_eabb6041-572b-42f5-8b1e-bf392cadf645" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis_79c42894-db55-4f43-8c4e-52d897979170" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_4386c639-b76e-4e99-b9e0-04f2df3a2dc0" xlink:to="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis_79c42894-db55-4f43-8c4e-52d897979170" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedAssetNameDomain_79c42894-db55-4f43-8c4e-52d897979170_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ImpairedLongLivedAssetsHeldAndUsedAssetNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis_79c42894-db55-4f43-8c4e-52d897979170" xlink:to="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedAssetNameDomain_79c42894-db55-4f43-8c4e-52d897979170_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedAssetNameDomain_b94dc6fe-8c6e-477d-8738-80fe18f5a6e3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ImpairedLongLivedAssetsHeldAndUsedAssetNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis_79c42894-db55-4f43-8c4e-52d897979170" xlink:to="loc_us-gaap_ImpairedLongLivedAssetsHeldAndUsedAssetNameDomain_b94dc6fe-8c6e-477d-8738-80fe18f5a6e3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_d84c061d-127f-4f61-a46a-8adf9cfde6ae" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_4386c639-b76e-4e99-b9e0-04f2df3a2dc0" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_d84c061d-127f-4f61-a46a-8adf9cfde6ae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d84c061d-127f-4f61-a46a-8adf9cfde6ae_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_d84c061d-127f-4f61-a46a-8adf9cfde6ae" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_d84c061d-127f-4f61-a46a-8adf9cfde6ae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4dbba097-bf2e-4d25-9d3e-805022f0d026" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_d84c061d-127f-4f61-a46a-8adf9cfde6ae" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4dbba097-bf2e-4d25-9d3e-805022f0d026" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_f50177ac-b346-4899-96ee-bf96b2ca5f72" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4dbba097-bf2e-4d25-9d3e-805022f0d026" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_f50177ac-b346-4899-96ee-bf96b2ca5f72" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_4950930d-49e3-4ec6-ac8d-1562e7f61b3b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4dbba097-bf2e-4d25-9d3e-805022f0d026" xlink:to="loc_us-gaap_TradeNamesMember_4950930d-49e3-4ec6-ac8d-1562e7f61b3b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_b3a80b35-1020-4238-a676-add33859f8e4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ImpairmentOfIntangibleAssetsFinitelived"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_bec5edfd-f7b5-455e-994e-480a7375239f" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsFinitelived_b3a80b35-1020-4238-a676-add33859f8e4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_RevenuesFromContractsWithCustomersPercentIncreaseDecreaseInSales_ae1b23e3-bb08-48b7-891a-ff406e87ed27" xlink:href="livn-20231231.xsd#livn_RevenuesFromContractsWithCustomersPercentIncreaseDecreaseInSales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_bec5edfd-f7b5-455e-994e-480a7375239f" xlink:to="loc_livn_RevenuesFromContractsWithCustomersPercentIncreaseDecreaseInSales_ae1b23e3-bb08-48b7-891a-ff406e87ed27" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_dc799e19-7996-46bf-a517-4042163552de" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_bec5edfd-f7b5-455e-994e-480a7375239f" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_dc799e19-7996-46bf-a517-4042163552de" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_cb9bccd1-ecac-48c8-b940-91ae3bf775bd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_bec5edfd-f7b5-455e-994e-480a7375239f" xlink:to="loc_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_cb9bccd1-ecac-48c8-b940-91ae3bf775bd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_3e49fe7f-7a07-4cdf-95c9-b2b4ae7547e5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_bec5edfd-f7b5-455e-994e-480a7375239f" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_3e49fe7f-7a07-4cdf-95c9-b2b4ae7547e5" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/GoodwillandIntangibleAssetsGoodwillCarryingAmountsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#GoodwillandIntangibleAssetsGoodwillCarryingAmountsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/GoodwillandIntangibleAssetsGoodwillCarryingAmountsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_db9d920d-5d7d-4ea4-824e-6bb7cb30e68f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_72e517fd-9061-44d5-956d-5c9b42c75242" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_db9d920d-5d7d-4ea4-824e-6bb7cb30e68f" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_72e517fd-9061-44d5-956d-5c9b42c75242" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_85fb9e14-90b4-4eb9-92e6-afc783c72694" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_72e517fd-9061-44d5-956d-5c9b42c75242" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_85fb9e14-90b4-4eb9-92e6-afc783c72694" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_85fb9e14-90b4-4eb9-92e6-afc783c72694_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_85fb9e14-90b4-4eb9-92e6-afc783c72694" xlink:to="loc_us-gaap_SegmentDomain_85fb9e14-90b4-4eb9-92e6-afc783c72694_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_1527b849-42fd-43ac-9fe5-a147c0373dbc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_85fb9e14-90b4-4eb9-92e6-afc783c72694" xlink:to="loc_us-gaap_SegmentDomain_1527b849-42fd-43ac-9fe5-a147c0373dbc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CardiopulmonarySegmentMember_683e48cb-95d0-4991-8af4-758bccc8fc85" xlink:href="livn-20231231.xsd#livn_CardiopulmonarySegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_1527b849-42fd-43ac-9fe5-a147c0373dbc" xlink:to="loc_livn_CardiopulmonarySegmentMember_683e48cb-95d0-4991-8af4-758bccc8fc85" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_NeuromodulationSegmentMember_ea5bf931-9129-4c36-8cd8-0773d000b504" xlink:href="livn-20231231.xsd#livn_NeuromodulationSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_1527b849-42fd-43ac-9fe5-a147c0373dbc" xlink:to="loc_livn_NeuromodulationSegmentMember_ea5bf931-9129-4c36-8cd8-0773d000b504" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_AdvancedCirculatorySupportSegmentMember_b49ec0d7-c8f5-4cc8-8189-e8413777d20f" xlink:href="livn-20231231.xsd#livn_AdvancedCirculatorySupportSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_1527b849-42fd-43ac-9fe5-a147c0373dbc" xlink:to="loc_livn_AdvancedCirculatorySupportSegmentMember_b49ec0d7-c8f5-4cc8-8189-e8413777d20f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_4d0bc3b1-1e5e-4d9d-add2-fc4dd5ff43d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_db9d920d-5d7d-4ea4-824e-6bb7cb30e68f" xlink:to="loc_us-gaap_GoodwillRollForward_4d0bc3b1-1e5e-4d9d-add2-fc4dd5ff43d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_d4571f74-3002-4621-adc9-77fe4aec68d3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_4d0bc3b1-1e5e-4d9d-add2-fc4dd5ff43d2" xlink:to="loc_us-gaap_Goodwill_d4571f74-3002-4621-adc9-77fe4aec68d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_36eb5b21-6af0-4d7a-9e0e-46242433a268" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_4d0bc3b1-1e5e-4d9d-add2-fc4dd5ff43d2" xlink:to="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_36eb5b21-6af0-4d7a-9e0e-46242433a268" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_0d01dcf0-de6b-4936-b63f-c767ad0d79f8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillAcquiredDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_4d0bc3b1-1e5e-4d9d-add2-fc4dd5ff43d2" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_0d01dcf0-de6b-4936-b63f-c767ad0d79f8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_0f2b2b21-d931-47d5-966c-8a51cbb3c661" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_4d0bc3b1-1e5e-4d9d-add2-fc4dd5ff43d2" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_0f2b2b21-d931-47d5-966c-8a51cbb3c661" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_34d7d63c-6adf-4d1a-ae91-126f963038f5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_4d0bc3b1-1e5e-4d9d-add2-fc4dd5ff43d2" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_34d7d63c-6adf-4d1a-ae91-126f963038f5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_7147f0e3-5304-49e4-b775-236d058b1372" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Goodwill"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/InvestmentsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#InvestmentsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/InvestmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_045200fb-703c-47e5-b1b5-240d6b1a75f7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_e5204127-71e9-4dce-b39f-50462b48ca39" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_045200fb-703c-47e5-b1b5-240d6b1a75f7" xlink:to="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_e5204127-71e9-4dce-b39f-50462b48ca39" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_21fe5d2c-5501-4c32-90b1-6a79962b4832" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsTable_e5204127-71e9-4dce-b39f-50462b48ca39" xlink:to="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_21fe5d2c-5501-4c32-90b1-6a79962b4832" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_21fe5d2c-5501-4c32-90b1-6a79962b4832_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_21fe5d2c-5501-4c32-90b1-6a79962b4832" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_21fe5d2c-5501-4c32-90b1-6a79962b4832_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_d1d8fca9-3ecb-419c-8303-612d7d0be815" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_EquityMethodInvesteeNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_21fe5d2c-5501-4c32-90b1-6a79962b4832" xlink:to="loc_srt_EquityMethodInvesteeNameDomain_d1d8fca9-3ecb-419c-8303-612d7d0be815" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ShiraTronicsIncDomain_59e3da05-ce00-493c-a271-aebc7583f3ec" xlink:href="livn-20231231.xsd#livn_ShiraTronicsIncDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_d1d8fca9-3ecb-419c-8303-612d7d0be815" xlink:to="loc_livn_ShiraTronicsIncDomain_59e3da05-ce00-493c-a271-aebc7583f3ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CadenceNeuroscienceIncMember_76ed187c-c68e-4cea-9cb4-29dc59211458" xlink:href="livn-20231231.xsd#livn_CadenceNeuroscienceIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_d1d8fca9-3ecb-419c-8303-612d7d0be815" xlink:to="loc_livn_CadenceNeuroscienceIncMember_76ed187c-c68e-4cea-9cb4-29dc59211458" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_NoctrixHealthIncMember_fe5d756f-d0fa-452b-a35c-d9ecb415e4e0" xlink:href="livn-20231231.xsd#livn_NoctrixHealthIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_d1d8fca9-3ecb-419c-8303-612d7d0be815" xlink:to="loc_livn_NoctrixHealthIncMember_fe5d756f-d0fa-452b-a35c-d9ecb415e4e0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CeribellInc.Member_03413e0a-7901-47d0-9449-e362fa4cf905" xlink:href="livn-20231231.xsd#livn_CeribellInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_d1d8fca9-3ecb-419c-8303-612d7d0be815" xlink:to="loc_livn_CeribellInc.Member_03413e0a-7901-47d0-9449-e362fa4cf905" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_RainbowMedicalLtdMember_506e2e22-8cf5-40fa-ba63-30364a8df3e5" xlink:href="livn-20231231.xsd#livn_RainbowMedicalLtdMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_d1d8fca9-3ecb-419c-8303-612d7d0be815" xlink:to="loc_livn_RainbowMedicalLtdMember_506e2e22-8cf5-40fa-ba63-30364a8df3e5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_HighlifeS.A.S.Member_4326110d-004c-4c5d-a861-e254f457020b" xlink:href="livn-20231231.xsd#livn_HighlifeS.A.S.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_d1d8fca9-3ecb-419c-8303-612d7d0be815" xlink:to="loc_livn_HighlifeS.A.S.Member_4326110d-004c-4c5d-a861-e254f457020b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MDStartIIMember_ed4c603f-64f2-4d86-b57a-28d05d2782f4" xlink:href="livn-20231231.xsd#livn_MDStartIIMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_d1d8fca9-3ecb-419c-8303-612d7d0be815" xlink:to="loc_livn_MDStartIIMember_ed4c603f-64f2-4d86-b57a-28d05d2782f4" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount_81516c23-6597-489b-a0af-f919f9c72c29" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_045200fb-703c-47e5-b1b5-240d6b1a75f7" xlink:to="loc_us-gaap_EquitySecuritiesWithoutReadilyDeterminableFairValueAmount_81516c23-6597-489b-a0af-f919f9c72c29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_faa7b6ca-97e3-40b0-8168-894c61a5147a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_045200fb-703c-47e5-b1b5-240d6b1a75f7" xlink:to="loc_us-gaap_EquityMethodInvestments_faa7b6ca-97e3-40b0-8168-894c61a5147a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_a4ba6d5b-0152-4d69-a50e-e7b879827882" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_045200fb-703c-47e5-b1b5-240d6b1a75f7" xlink:to="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_a4ba6d5b-0152-4d69-a50e-e7b879827882" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_EquityMethodInvestmentsRequiredFunding_1211b894-931a-4590-829e-f0a6b30ce8fe" xlink:href="livn-20231231.xsd#livn_EquityMethodInvestmentsRequiredFunding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_045200fb-703c-47e5-b1b5-240d6b1a75f7" xlink:to="loc_livn_EquityMethodInvestmentsRequiredFunding_1211b894-931a-4590-829e-f0a6b30ce8fe" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/FairValueMeasurementsFairValueofAssetsandLiabilitiesMeasuredonaRecurringBasisDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#FairValueMeasurementsFairValueofAssetsandLiabilitiesMeasuredonaRecurringBasisDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/FairValueMeasurementsFairValueofAssetsandLiabilitiesMeasuredonaRecurringBasisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b465e269-0ad2-4485-a6ea-67130d812a7a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5a0a2ba8-e8de-4b06-acd8-d754fa73e40c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b465e269-0ad2-4485-a6ea-67130d812a7a" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5a0a2ba8-e8de-4b06-acd8-d754fa73e40c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1757ffb7-a4fc-47e8-af17-fb4242833109" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5a0a2ba8-e8de-4b06-acd8-d754fa73e40c" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1757ffb7-a4fc-47e8-af17-fb4242833109" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_1757ffb7-a4fc-47e8-af17-fb4242833109_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1757ffb7-a4fc-47e8-af17-fb4242833109" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_1757ffb7-a4fc-47e8-af17-fb4242833109_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_ee0d3ab0-4392-4cf8-903d-7756b0991b19" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1757ffb7-a4fc-47e8-af17-fb4242833109" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_ee0d3ab0-4392-4cf8-903d-7756b0991b19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_44703fe0-3de8-4975-aeb2-572fbbc7803e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_ee0d3ab0-4392-4cf8-903d-7756b0991b19" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_44703fe0-3de8-4975-aeb2-572fbbc7803e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e1343815-e26f-4a75-8129-debc4bed034b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5a0a2ba8-e8de-4b06-acd8-d754fa73e40c" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e1343815-e26f-4a75-8129-debc4bed034b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e1343815-e26f-4a75-8129-debc4bed034b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e1343815-e26f-4a75-8129-debc4bed034b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e1343815-e26f-4a75-8129-debc4bed034b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_406e58a9-9ad1-469b-9e65-8ee1659ad9a4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e1343815-e26f-4a75-8129-debc4bed034b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_406e58a9-9ad1-469b-9e65-8ee1659ad9a4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_28a5b740-f8bf-4e0c-82cd-b8e96e9bf6eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_406e58a9-9ad1-469b-9e65-8ee1659ad9a4" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_28a5b740-f8bf-4e0c-82cd-b8e96e9bf6eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_26d89a4d-dfa9-4adf-8935-53beb2fe8404" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_406e58a9-9ad1-469b-9e65-8ee1659ad9a4" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_26d89a4d-dfa9-4adf-8935-53beb2fe8404" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_ba768a54-b22e-4580-897c-d6c3a990bf5f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_406e58a9-9ad1-469b-9e65-8ee1659ad9a4" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_ba768a54-b22e-4580-897c-d6c3a990bf5f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_8b03eb6c-f492-42a9-a450-c80100be7dfd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5a0a2ba8-e8de-4b06-acd8-d754fa73e40c" xlink:to="loc_us-gaap_HedgingDesignationAxis_8b03eb6c-f492-42a9-a450-c80100be7dfd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_8b03eb6c-f492-42a9-a450-c80100be7dfd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_8b03eb6c-f492-42a9-a450-c80100be7dfd" xlink:to="loc_us-gaap_HedgingDesignationDomain_8b03eb6c-f492-42a9-a450-c80100be7dfd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_d93d2c29-8e25-4467-8576-99151dc8eb37" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_8b03eb6c-f492-42a9-a450-c80100be7dfd" xlink:to="loc_us-gaap_HedgingDesignationDomain_d93d2c29-8e25-4467-8576-99151dc8eb37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_233f5ca0-6254-4337-9f3a-262ea4d42656" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_d93d2c29-8e25-4467-8576-99151dc8eb37" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_233f5ca0-6254-4337-9f3a-262ea4d42656" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_c74735a4-f23e-4c42-990d-c7db534b9232" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_d93d2c29-8e25-4467-8576-99151dc8eb37" xlink:to="loc_us-gaap_NondesignatedMember_c74735a4-f23e-4c42-990d-c7db534b9232" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_eb1ca8f4-8055-4131-8144-1378db06e617" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_5a0a2ba8-e8de-4b06-acd8-d754fa73e40c" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_eb1ca8f4-8055-4131-8144-1378db06e617" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_eb1ca8f4-8055-4131-8144-1378db06e617_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_eb1ca8f4-8055-4131-8144-1378db06e617" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_eb1ca8f4-8055-4131-8144-1378db06e617_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_6b453698-86bc-47a1-bd44-a596db4dd1ef" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_eb1ca8f4-8055-4131-8144-1378db06e617" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_6b453698-86bc-47a1-bd44-a596db4dd1ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_6f5833cd-a6f0-4fab-b1f2-e42eba4b7992" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_6b453698-86bc-47a1-bd44-a596db4dd1ef" xlink:to="loc_us-gaap_InterestRateSwapMember_6f5833cd-a6f0-4fab-b1f2-e42eba4b7992" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_FreestandingInstrumentMember_36c288cd-f57b-41ca-a094-117fcc4af473" xlink:href="livn-20231231.xsd#livn_FreestandingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_6b453698-86bc-47a1-bd44-a596db4dd1ef" xlink:to="loc_livn_FreestandingInstrumentMember_36c288cd-f57b-41ca-a094-117fcc4af473" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_6925372d-f5e4-4cbe-a74e-19f78f66ea79" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmbeddedDerivativeFinancialInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_6b453698-86bc-47a1-bd44-a596db4dd1ef" xlink:to="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_6925372d-f5e4-4cbe-a74e-19f78f66ea79" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_06259608-0d48-4b9f-a8ed-c675780c7b22" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b465e269-0ad2-4485-a6ea-67130d812a7a" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_06259608-0d48-4b9f-a8ed-c675780c7b22" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_719445ca-b3b2-4970-8376-e5a22f1acf99" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_06259608-0d48-4b9f-a8ed-c675780c7b22" xlink:to="loc_us-gaap_DerivativeAssets_719445ca-b3b2-4970-8376-e5a22f1acf99" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivablesFairValueDisclosure_c85a5426-4ed2-422f-8aa4-44155eda5224" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReceivablesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_06259608-0d48-4b9f-a8ed-c675780c7b22" xlink:to="loc_us-gaap_ReceivablesFairValueDisclosure_c85a5426-4ed2-422f-8aa4-44155eda5224" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_5ac72d78-c963-4c4f-8cad-cadcb0bcd337" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_06259608-0d48-4b9f-a8ed-c675780c7b22" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_5ac72d78-c963-4c4f-8cad-cadcb0bcd337" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialLiabilitiesFairValueDisclosureAbstract_a9ef7293-2b3c-4f33-9357-e2bdb5724d3e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FinancialLiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_b465e269-0ad2-4485-a6ea-67130d812a7a" xlink:to="loc_us-gaap_FinancialLiabilitiesFairValueDisclosureAbstract_a9ef7293-2b3c-4f33-9357-e2bdb5724d3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_59862378-8349-4c7d-8cea-ed6c5d122177" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialLiabilitiesFairValueDisclosureAbstract_a9ef7293-2b3c-4f33-9357-e2bdb5724d3e" xlink:to="loc_us-gaap_DerivativeLiabilities_59862378-8349-4c7d-8cea-ed6c5d122177" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent_61a7ead7-58f2-4c38-8a8b-522935a19966" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialLiabilitiesFairValueDisclosureAbstract_a9ef7293-2b3c-4f33-9357-e2bdb5724d3e" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityNoncurrent_61a7ead7-58f2-4c38-8a8b-522935a19966" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_bdd8992f-407e-44dd-b716-08efd0b9f3ed" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialLiabilitiesFairValueDisclosureAbstract_a9ef7293-2b3c-4f33-9357-e2bdb5724d3e" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_bdd8992f-407e-44dd-b716-08efd0b9f3ed" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/FairValueMeasurementsRecurringFairValueMeasurementsUsingSignificantUnobservableInputsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#FairValueMeasurementsRecurringFairValueMeasurementsUsingSignificantUnobservableInputsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/FairValueMeasurementsRecurringFairValueMeasurementsUsingSignificantUnobservableInputsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_1e9bbf54-9d47-4717-9774-223bef98ee43" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_f1205948-8945-4f06-8fb5-5747b8fe79d7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_1e9bbf54-9d47-4717-9774-223bef98ee43" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_f1205948-8945-4f06-8fb5-5747b8fe79d7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_bfecce22-eeba-4874-812b-2cb5b270db80" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_f1205948-8945-4f06-8fb5-5747b8fe79d7" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_bfecce22-eeba-4874-812b-2cb5b270db80" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_bfecce22-eeba-4874-812b-2cb5b270db80_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_bfecce22-eeba-4874-812b-2cb5b270db80" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_bfecce22-eeba-4874-812b-2cb5b270db80_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5f3ad04a-aa25-448f-a9b9-0bd1ebaef29d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_bfecce22-eeba-4874-812b-2cb5b270db80" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5f3ad04a-aa25-448f-a9b9-0bd1ebaef29d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_b26f2080-831c-4e35-8418-e0b131fc1476" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_5f3ad04a-aa25-448f-a9b9-0bd1ebaef29d" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_b26f2080-831c-4e35-8418-e0b131fc1476" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_81abca78-d0f8-4877-870b-0860722d2b8c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_f1205948-8945-4f06-8fb5-5747b8fe79d7" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_81abca78-d0f8-4877-870b-0860722d2b8c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_81abca78-d0f8-4877-870b-0860722d2b8c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_81abca78-d0f8-4877-870b-0860722d2b8c" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_81abca78-d0f8-4877-870b-0860722d2b8c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_e2d0f012-87f4-49b0-9c70-4382428e75d8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_81abca78-d0f8-4877-870b-0860722d2b8c" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_e2d0f012-87f4-49b0-9c70-4382428e75d8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_53345f7a-a3e3-4fb5-bfac-aec1c8740727" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_e2d0f012-87f4-49b0-9c70-4382428e75d8" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_53345f7a-a3e3-4fb5-bfac-aec1c8740727" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_6f3119a2-f261-4ba0-b388-8f8e0e5bb596" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_f1205948-8945-4f06-8fb5-5747b8fe79d7" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_6f3119a2-f261-4ba0-b388-8f8e0e5bb596" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_6f3119a2-f261-4ba0-b388-8f8e0e5bb596_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_6f3119a2-f261-4ba0-b388-8f8e0e5bb596" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_6f3119a2-f261-4ba0-b388-8f8e0e5bb596_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5ef72d98-7d36-4ef3-8122-679daa53749f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_6f3119a2-f261-4ba0-b388-8f8e0e5bb596" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5ef72d98-7d36-4ef3-8122-679daa53749f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFinancialInstrumentsAssetsMember_5d96a018-f501-4b2b-8438-903fdf59ccdd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeFinancialInstrumentsAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5ef72d98-7d36-4ef3-8122-679daa53749f" xlink:to="loc_us-gaap_DerivativeFinancialInstrumentsAssetsMember_5d96a018-f501-4b2b-8438-903fdf59ccdd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesReceivableMember_7b305c3a-0895-4263-baae-ae84f6b126eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NotesReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_5ef72d98-7d36-4ef3-8122-679daa53749f" xlink:to="loc_us-gaap_NotesReceivableMember_7b305c3a-0895-4263-baae-ae84f6b126eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_c74da61f-0b96-4bc9-b516-19eb82cbd0f0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_f1205948-8945-4f06-8fb5-5747b8fe79d7" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_c74da61f-0b96-4bc9-b516-19eb82cbd0f0" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_c74da61f-0b96-4bc9-b516-19eb82cbd0f0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_c74da61f-0b96-4bc9-b516-19eb82cbd0f0" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_c74da61f-0b96-4bc9-b516-19eb82cbd0f0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_bebf9ea1-9e70-41b8-89d8-8d7216d1b45f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_c74da61f-0b96-4bc9-b516-19eb82cbd0f0" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_bebf9ea1-9e70-41b8-89d8-8d7216d1b45f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_EmbeddedExchangeFeatureLiabilityMember_2eab6ae8-649b-4db1-853f-02dbd8db1ef8" xlink:href="livn-20231231.xsd#livn_EmbeddedExchangeFeatureLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_bebf9ea1-9e70-41b8-89d8-8d7216d1b45f" xlink:to="loc_livn_EmbeddedExchangeFeatureLiabilityMember_2eab6ae8-649b-4db1-853f-02dbd8db1ef8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ContingentConsiderationLiabilityMember_808c6772-68ae-43a4-9b4d-4db0fe325ecf" xlink:href="livn-20231231.xsd#livn_ContingentConsiderationLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_bebf9ea1-9e70-41b8-89d8-8d7216d1b45f" xlink:to="loc_livn_ContingentConsiderationLiabilityMember_808c6772-68ae-43a4-9b4d-4db0fe325ecf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_115ef6f6-a7c5-4e82-860f-29b6454114f1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_f1205948-8945-4f06-8fb5-5747b8fe79d7" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_115ef6f6-a7c5-4e82-860f-29b6454114f1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_115ef6f6-a7c5-4e82-860f-29b6454114f1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_115ef6f6-a7c5-4e82-860f-29b6454114f1" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_115ef6f6-a7c5-4e82-860f-29b6454114f1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_73d2cba2-ae25-47c9-93e7-fe85f54f9205" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_115ef6f6-a7c5-4e82-860f-29b6454114f1" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_73d2cba2-ae25-47c9-93e7-fe85f54f9205" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_945ce446-054e-42b5-bea1-20827ebe3bfd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_73d2cba2-ae25-47c9-93e7-fe85f54f9205" xlink:to="loc_us-gaap_CostOfSalesMember_945ce446-054e-42b5-bea1-20827ebe3bfd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_21236eb9-b805-4473-94f8-26aefc5b278f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ResearchAndDevelopmentExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_73d2cba2-ae25-47c9-93e7-fe85f54f9205" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_21236eb9-b805-4473-94f8-26aefc5b278f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_148b65c0-23b7-4d46-b51e-3deaf47517c9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_1e9bbf54-9d47-4717-9774-223bef98ee43" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_148b65c0-23b7-4d46-b51e-3deaf47517c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_1895f4c9-dc4d-491f-b83a-ad9e436b3001" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_148b65c0-23b7-4d46-b51e-3deaf47517c9" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_1895f4c9-dc4d-491f-b83a-ad9e436b3001" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_e7893654-156a-447d-b1d9-22e971d096e9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_148b65c0-23b7-4d46-b51e-3deaf47517c9" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_e7893654-156a-447d-b1d9-22e971d096e9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_f274e81f-49ef-46de-83e3-2691ddae9564" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_148b65c0-23b7-4d46-b51e-3deaf47517c9" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_f274e81f-49ef-46de-83e3-2691ddae9564" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPeriodAdjustments_b8445776-8474-4981-9025-01d83287b636" xlink:href="livn-20231231.xsd#livn_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPeriodAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_148b65c0-23b7-4d46-b51e-3deaf47517c9" xlink:to="loc_livn_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPeriodAdjustments_b8445776-8474-4981-9025-01d83287b636" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_68add08f-cdf6-4b18-be61-c1a7e6bc24de" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_148b65c0-23b7-4d46-b51e-3deaf47517c9" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_68add08f-cdf6-4b18-be61-c1a7e6bc24de" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_f8cddc3c-24f5-4fa3-9c07-fd8af72981aa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_b98786e1-6a17-4787-8a69-bdedb6f95b95" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_1e9bbf54-9d47-4717-9774-223bef98ee43" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_b98786e1-6a17-4787-8a69-bdedb6f95b95" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_9d1fc68a-2da6-49e6-a25a-a0c90b05f913" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_b98786e1-6a17-4787-8a69-bdedb6f95b95" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_9d1fc68a-2da6-49e6-a25a-a0c90b05f913" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases_8e6b8907-cce1-4a72-912c-d9abc8de605a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_b98786e1-6a17-4787-8a69-bdedb6f95b95" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases_8e6b8907-cce1-4a72-912c-d9abc8de605a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_e4fadc3b-a742-4347-ba1f-bf8659e044a3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_b98786e1-6a17-4787-8a69-bdedb6f95b95" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements_e4fadc3b-a742-4347-ba1f-bf8659e044a3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodAdjustments_f43cb2ee-2cd6-4c62-a715-6c33aa5b447f" xlink:href="livn-20231231.xsd#livn_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_b98786e1-6a17-4787-8a69-bdedb6f95b95" xlink:to="loc_livn_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodAdjustments_f43cb2ee-2cd6-4c62-a715-6c33aa5b447f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_72e99ae3-1c29-48f8-9ff9-9e1f114a1448" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_b98786e1-6a17-4787-8a69-bdedb6f95b95" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings_72e99ae3-1c29-48f8-9ff9-9e1f114a1448" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_6200f9c4-d11e-4da8-b75e-4b3ed1f449c1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisCurrentLiabilityValue_60d04ca4-ec30-4fe1-9361-f2b5e6730c9e" xlink:href="livn-20231231.xsd#livn_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisCurrentLiabilityValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_b98786e1-6a17-4787-8a69-bdedb6f95b95" xlink:to="loc_livn_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisCurrentLiabilityValue_60d04ca4-ec30-4fe1-9361-f2b5e6730c9e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisNoncurrentLiabilityValue_07c059bc-ae0a-467c-be06-d9c90d8b21fc" xlink:href="livn-20231231.xsd#livn_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisNoncurrentLiabilityValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_b98786e1-6a17-4787-8a69-bdedb6f95b95" xlink:to="loc_livn_FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisNoncurrentLiabilityValue_07c059bc-ae0a-467c-be06-d9c90d8b21fc" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList_933a88af-e64b-4344-bcc2-90bef6a16b30" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_1e9bbf54-9d47-4717-9774-223bef98ee43" xlink:to="loc_us-gaap_FairValueRecurringBasisUnobservableInputReconciliationLiabilityGainLossStatementOfIncomeExtensibleList_933a88af-e64b-4344-bcc2-90bef6a16b30" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#FairValueMeasurementsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/FairValueMeasurementsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_52ca2b6a-1559-4745-97f2-293b4f0bd9ba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_52ca2b6a-1559-4745-97f2-293b4f0bd9ba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_4313648c-49d8-4ad1-9b97-912234000a3f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_52ca2b6a-1559-4745-97f2-293b4f0bd9ba" xlink:to="loc_us-gaap_DebtInstrumentAxis_4313648c-49d8-4ad1-9b97-912234000a3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_4313648c-49d8-4ad1-9b97-912234000a3f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_4313648c-49d8-4ad1-9b97-912234000a3f" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_4313648c-49d8-4ad1-9b97-912234000a3f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5ecf310d-d0eb-4f97-a251-a71f7d55def7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_4313648c-49d8-4ad1-9b97-912234000a3f" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5ecf310d-d0eb-4f97-a251-a71f7d55def7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_A2020CashExchangeableSeniorNotesMember_a4b470de-387f-49ed-bee6-55b4cefb4be2" xlink:href="livn-20231231.xsd#livn_A2020CashExchangeableSeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_5ecf310d-d0eb-4f97-a251-a71f7d55def7" xlink:to="loc_livn_A2020CashExchangeableSeniorNotesMember_a4b470de-387f-49ed-bee6-55b4cefb4be2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_39ad5a10-c5fe-4784-9b6e-675f33894e74" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_52ca2b6a-1559-4745-97f2-293b4f0bd9ba" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_39ad5a10-c5fe-4784-9b6e-675f33894e74" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_39ad5a10-c5fe-4784-9b6e-675f33894e74_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_39ad5a10-c5fe-4784-9b6e-675f33894e74" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_39ad5a10-c5fe-4784-9b6e-675f33894e74_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_b99642da-082b-42a2-900e-db793d2e212b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_39ad5a10-c5fe-4784-9b6e-675f33894e74" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_b99642da-082b-42a2-900e-db793d2e212b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_6254550f-7f94-4804-be65-780105a4c76f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_b99642da-082b-42a2-900e-db793d2e212b" xlink:to="loc_us-gaap_SeniorNotesMember_6254550f-7f94-4804-be65-780105a4c76f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_d0c442d1-bed9-4473-8106-4fd7988c7d5a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_52ca2b6a-1559-4745-97f2-293b4f0bd9ba" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_d0c442d1-bed9-4473-8106-4fd7988c7d5a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_d0c442d1-bed9-4473-8106-4fd7988c7d5a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_d0c442d1-bed9-4473-8106-4fd7988c7d5a" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_d0c442d1-bed9-4473-8106-4fd7988c7d5a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_99988249-103c-4843-8c89-d0f95990c26c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_d0c442d1-bed9-4473-8106-4fd7988c7d5a" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_99988249-103c-4843-8c89-d0f95990c26c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_9858c735-6c74-45a6-9090-120cb4b08672" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmbeddedDerivativeFinancialInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_99988249-103c-4843-8c89-d0f95990c26c" xlink:to="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_9858c735-6c74-45a6-9090-120cb4b08672" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CappedCallMember_cadbb7b2-8c39-4e98-b78f-96cd5c6a410f" xlink:href="livn-20231231.xsd#livn_CappedCallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_99988249-103c-4843-8c89-d0f95990c26c" xlink:to="loc_livn_CappedCallMember_cadbb7b2-8c39-4e98-b78f-96cd5c6a410f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_e50ed278-f077-4c6a-9168-22810b69cbeb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_52ca2b6a-1559-4745-97f2-293b4f0bd9ba" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_e50ed278-f077-4c6a-9168-22810b69cbeb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_e50ed278-f077-4c6a-9168-22810b69cbeb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_e50ed278-f077-4c6a-9168-22810b69cbeb" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_e50ed278-f077-4c6a-9168-22810b69cbeb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_c193907b-c515-4972-a0bf-86fe46ede906" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_e50ed278-f077-4c6a-9168-22810b69cbeb" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_c193907b-c515-4972-a0bf-86fe46ede906" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MeasurementInputStockPriceVolatilityMember_cd926194-e3bf-421f-bfb4-dfceb747ae75" xlink:href="livn-20231231.xsd#livn_MeasurementInputStockPriceVolatilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_c193907b-c515-4972-a0bf-86fe46ede906" xlink:to="loc_livn_MeasurementInputStockPriceVolatilityMember_cd926194-e3bf-421f-bfb4-dfceb747ae75" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MeasurementInputProbabilityofPaymentMember_ad96cdd9-221a-4779-8130-b338f12ec9a9" xlink:href="livn-20231231.xsd#livn_MeasurementInputProbabilityofPaymentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_c193907b-c515-4972-a0bf-86fe46ede906" xlink:to="loc_livn_MeasurementInputProbabilityofPaymentMember_ad96cdd9-221a-4779-8130-b338f12ec9a9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_44d4dd7e-c637-44a5-8937-5dd662e7f289" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_52ca2b6a-1559-4745-97f2-293b4f0bd9ba" xlink:to="loc_srt_RangeAxis_44d4dd7e-c637-44a5-8937-5dd662e7f289" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_44d4dd7e-c637-44a5-8937-5dd662e7f289_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_44d4dd7e-c637-44a5-8937-5dd662e7f289" xlink:to="loc_srt_RangeMember_44d4dd7e-c637-44a5-8937-5dd662e7f289_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_5ac2e80c-ef55-4ca2-b24a-246a94441c0c" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_44d4dd7e-c637-44a5-8937-5dd662e7f289" xlink:to="loc_srt_RangeMember_5ac2e80c-ef55-4ca2-b24a-246a94441c0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_b4dd1a7e-b871-46ff-b947-88c9742ae101" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_5ac2e80c-ef55-4ca2-b24a-246a94441c0c" xlink:to="loc_srt_MinimumMember_b4dd1a7e-b871-46ff-b947-88c9742ae101" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_3536280f-f7fa-49ef-a656-cc516dd6b326" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_52ca2b6a-1559-4745-97f2-293b4f0bd9ba" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_3536280f-f7fa-49ef-a656-cc516dd6b326" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3536280f-f7fa-49ef-a656-cc516dd6b326_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_3536280f-f7fa-49ef-a656-cc516dd6b326" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_3536280f-f7fa-49ef-a656-cc516dd6b326_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_16565a05-1b1c-4e69-a7b6-24cedc888e3e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_3536280f-f7fa-49ef-a656-cc516dd6b326" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_16565a05-1b1c-4e69-a7b6-24cedc888e3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TandemLifeMember_bfc2e135-9042-449e-bc65-57fec8674360" xlink:href="livn-20231231.xsd#livn_TandemLifeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_16565a05-1b1c-4e69-a7b6-24cedc888e3e" xlink:to="loc_livn_TandemLifeMember_bfc2e135-9042-449e-bc65-57fec8674360" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ALungTechnologiesInc.Member_7ad59de8-59cd-4001-9584-8e4cf320151e" xlink:href="livn-20231231.xsd#livn_ALungTechnologiesInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_16565a05-1b1c-4e69-a7b6-24cedc888e3e" xlink:to="loc_livn_ALungTechnologiesInc.Member_7ad59de8-59cd-4001-9584-8e4cf320151e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e6c4505d-36fd-42ca-84f0-af4c9a7fae6b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_52ca2b6a-1559-4745-97f2-293b4f0bd9ba" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e6c4505d-36fd-42ca-84f0-af4c9a7fae6b" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e6c4505d-36fd-42ca-84f0-af4c9a7fae6b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e6c4505d-36fd-42ca-84f0-af4c9a7fae6b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_e6c4505d-36fd-42ca-84f0-af4c9a7fae6b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c3afbdc9-9372-47b5-bcc8-984b2e20de0e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_e6c4505d-36fd-42ca-84f0-af4c9a7fae6b" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c3afbdc9-9372-47b5-bcc8-984b2e20de0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_4fb38e93-8428-4152-8771-0defec20ee59" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c3afbdc9-9372-47b5-bcc8-984b2e20de0e" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_4fb38e93-8428-4152-8771-0defec20ee59" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1e3a3445-7e17-423d-8d9c-dbcd89c61b20" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_52ca2b6a-1559-4745-97f2-293b4f0bd9ba" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1e3a3445-7e17-423d-8d9c-dbcd89c61b20" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_1e3a3445-7e17-423d-8d9c-dbcd89c61b20_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1e3a3445-7e17-423d-8d9c-dbcd89c61b20" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_1e3a3445-7e17-423d-8d9c-dbcd89c61b20_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_1274e646-ad61-4ecb-afb1-de7c0e70d4cb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_1e3a3445-7e17-423d-8d9c-dbcd89c61b20" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_1274e646-ad61-4ecb-afb1-de7c0e70d4cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_c4b1c7dd-4d58-4f82-8aaf-b57e3b7c1d2a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_1274e646-ad61-4ecb-afb1-de7c0e70d4cb" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_c4b1c7dd-4d58-4f82-8aaf-b57e3b7c1d2a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_42d8bc3d-146f-4591-a48a-7510eee02fb8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_42d8bc3d-146f-4591-a48a-7510eee02fb8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability_92ea6300-a4db-45e5-ac93-d8134f0d1033" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability_92ea6300-a4db-45e5-ac93-d8134f0d1033" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_dab72478-0644-4642-a521-351e568e3956" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_us-gaap_DerivativeAssets_dab72478-0644-4642-a521-351e568e3956" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityMeasurementInput_ad6fdcff-09b1-4134-add5-0d82ad49e100" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilityMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_us-gaap_DerivativeLiabilityMeasurementInput_ad6fdcff-09b1-4134-add5-0d82ad49e100" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_SensitivityAnalysisOfFairValue10PercentDecreaseInStockPriceVolatilityFairValue_dd75f3a8-e357-4c01-8ac3-ed5a970d214e" xlink:href="livn-20231231.xsd#livn_SensitivityAnalysisOfFairValue10PercentDecreaseInStockPriceVolatilityFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_livn_SensitivityAnalysisOfFairValue10PercentDecreaseInStockPriceVolatilityFairValue_dd75f3a8-e357-4c01-8ac3-ed5a970d214e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_SensitivityAnalysisOfFairValue10PercentIncreaseInStockPriceVolatilityFairValue_f1cc4e15-a471-43d0-937e-426ea2470a39" xlink:href="livn-20231231.xsd#livn_SensitivityAnalysisOfFairValue10PercentIncreaseInStockPriceVolatilityFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_livn_SensitivityAnalysisOfFairValue10PercentIncreaseInStockPriceVolatilityFairValue_f1cc4e15-a471-43d0-937e-426ea2470a39" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_c88ba8de-8b50-4f59-99d1-8c224f9f4f6a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_c88ba8de-8b50-4f59-99d1-8c224f9f4f6a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_BusinessCombinationContingentConsiderationMeasurementInput_28f470e1-8827-4555-87af-deebed4cd3bf" xlink:href="livn-20231231.xsd#livn_BusinessCombinationContingentConsiderationMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_livn_BusinessCombinationContingentConsiderationMeasurementInput_28f470e1-8827-4555-87af-deebed4cd3bf" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_213378b6-32b2-4aa2-b406-db32bf462cb4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_us-gaap_LongTermDebt_213378b6-32b2-4aa2-b406-db32bf462cb4" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFairValue_a7a49bb0-9bdc-4e30-ad4a-1180ef64151e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_64b6e0f7-0ff4-4d26-b835-d5e68bb0406b" xlink:to="loc_us-gaap_DebtInstrumentFairValue_a7a49bb0-9bdc-4e30-ad4a-1180ef64151e" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/FairValueMeasurementsFairValueofContingentConsiderationbyAcquisitionDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#FairValueMeasurementsFairValueofContingentConsiderationbyAcquisitionDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/FairValueMeasurementsFairValueofContingentConsiderationbyAcquisitionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionContingentConsiderationLineItems_16d2a16f-3b67-494a-bf05-f883c990ade1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionContingentConsiderationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable_c25476f7-3beb-479d-9b9f-ae0088503130" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionContingentConsiderationLineItems_16d2a16f-3b67-494a-bf05-f883c990ade1" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable_c25476f7-3beb-479d-9b9f-ae0088503130" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_6b9318ce-1682-459b-b9ea-b5bf9501c15f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable_c25476f7-3beb-479d-9b9f-ae0088503130" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_6b9318ce-1682-459b-b9ea-b5bf9501c15f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6b9318ce-1682-459b-b9ea-b5bf9501c15f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_6b9318ce-1682-459b-b9ea-b5bf9501c15f" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6b9318ce-1682-459b-b9ea-b5bf9501c15f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_43e68d83-a141-4207-8440-448eb64b0511" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_6b9318ce-1682-459b-b9ea-b5bf9501c15f" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_43e68d83-a141-4207-8440-448eb64b0511" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ImTheraMedicalInc.Member_d6ed2943-7f38-4896-b220-c3d8aa9dc72e" xlink:href="livn-20231231.xsd#livn_ImTheraMedicalInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_43e68d83-a141-4207-8440-448eb64b0511" xlink:to="loc_livn_ImTheraMedicalInc.Member_d6ed2943-7f38-4896-b220-c3d8aa9dc72e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ALungTechnologiesInc.Member_39e2c859-7a0b-4109-9b90-d32a57deabad" xlink:href="livn-20231231.xsd#livn_ALungTechnologiesInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_43e68d83-a141-4207-8440-448eb64b0511" xlink:to="loc_livn_ALungTechnologiesInc.Member_39e2c859-7a0b-4109-9b90-d32a57deabad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_bffb0df7-9c71-4fef-b2ea-dd54ca3de97c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable_c25476f7-3beb-479d-9b9f-ae0088503130" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_bffb0df7-9c71-4fef-b2ea-dd54ca3de97c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_bffb0df7-9c71-4fef-b2ea-dd54ca3de97c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_bffb0df7-9c71-4fef-b2ea-dd54ca3de97c" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_bffb0df7-9c71-4fef-b2ea-dd54ca3de97c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_ee9a93f4-fc87-4590-8510-0dd29b59197d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_bffb0df7-9c71-4fef-b2ea-dd54ca3de97c" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_ee9a93f4-fc87-4590-8510-0dd29b59197d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_b3e5304f-c441-4563-b497-e1ef96335f40" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_ee9a93f4-fc87-4590-8510-0dd29b59197d" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_b3e5304f-c441-4563-b497-e1ef96335f40" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_0b632ee0-4f4f-4aea-a6d9-bd4a32cf9055" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionContingentConsiderationTable_c25476f7-3beb-479d-9b9f-ae0088503130" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_0b632ee0-4f4f-4aea-a6d9-bd4a32cf9055" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0b632ee0-4f4f-4aea-a6d9-bd4a32cf9055_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_0b632ee0-4f4f-4aea-a6d9-bd4a32cf9055" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_0b632ee0-4f4f-4aea-a6d9-bd4a32cf9055_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_281f5480-3c1e-427e-b6db-ed3044078094" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_0b632ee0-4f4f-4aea-a6d9-bd4a32cf9055" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_281f5480-3c1e-427e-b6db-ed3044078094" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_22de6580-ea03-4fd4-97aa-e2f94f12059d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_281f5480-3c1e-427e-b6db-ed3044078094" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_22de6580-ea03-4fd4-97aa-e2f94f12059d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_e42f9888-0e2f-4f2b-a82f-ee736196f2a5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionContingentConsiderationLineItems_16d2a16f-3b67-494a-bf05-f883c990ade1" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_e42f9888-0e2f-4f2b-a82f-ee736196f2a5" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/FairValueMeasurementsSignificantUnobservableInputsRelatedtoContingentConsiderationDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#FairValueMeasurementsSignificantUnobservableInputsRelatedtoContingentConsiderationDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/FairValueMeasurementsSignificantUnobservableInputsRelatedtoContingentConsiderationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_de6c6c14-0475-4bb4-ae43-f3fa860c4d52" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_d4dc3ece-755f-4f7b-b286-23d07921899c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_de6c6c14-0475-4bb4-ae43-f3fa860c4d52" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_d4dc3ece-755f-4f7b-b286-23d07921899c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_5ff6f219-a98b-442c-b50d-ca236cd34d9f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_d4dc3ece-755f-4f7b-b286-23d07921899c" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_5ff6f219-a98b-442c-b50d-ca236cd34d9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_5ff6f219-a98b-442c-b50d-ca236cd34d9f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_5ff6f219-a98b-442c-b50d-ca236cd34d9f" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_5ff6f219-a98b-442c-b50d-ca236cd34d9f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a8812311-a626-4057-afff-7b522a986402" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_5ff6f219-a98b-442c-b50d-ca236cd34d9f" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a8812311-a626-4057-afff-7b522a986402" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ImTheraMedicalInc.Member_8c35a889-01e5-400b-9a64-bc977b9f7fc6" xlink:href="livn-20231231.xsd#livn_ImTheraMedicalInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a8812311-a626-4057-afff-7b522a986402" xlink:to="loc_livn_ImTheraMedicalInc.Member_8c35a889-01e5-400b-9a64-bc977b9f7fc6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ALungTechnologiesInc.Member_154f2870-5ef8-46f0-ab26-515181e571ca" xlink:href="livn-20231231.xsd#livn_ALungTechnologiesInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a8812311-a626-4057-afff-7b522a986402" xlink:to="loc_livn_ALungTechnologiesInc.Member_154f2870-5ef8-46f0-ab26-515181e571ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TandemLifeMember_560685c9-683a-4cd1-9218-1db3f05e332e" xlink:href="livn-20231231.xsd#livn_TandemLifeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_a8812311-a626-4057-afff-7b522a986402" xlink:to="loc_livn_TandemLifeMember_560685c9-683a-4cd1-9218-1db3f05e332e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f41a34bf-6789-4dfe-add1-157a36c86873" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_d4dc3ece-755f-4f7b-b286-23d07921899c" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f41a34bf-6789-4dfe-add1-157a36c86873" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f41a34bf-6789-4dfe-add1-157a36c86873_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f41a34bf-6789-4dfe-add1-157a36c86873" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f41a34bf-6789-4dfe-add1-157a36c86873_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f2657ed5-b62c-4b75-9364-9c5cb1d77f06" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_f41a34bf-6789-4dfe-add1-157a36c86873" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f2657ed5-b62c-4b75-9364-9c5cb1d77f06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_0bc3adcc-a910-44af-989d-a3d27b818436" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_f2657ed5-b62c-4b75-9364-9c5cb1d77f06" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_0bc3adcc-a910-44af-989d-a3d27b818436" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_52c7994d-b895-4399-89d8-acb9f12d2e98" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_d4dc3ece-755f-4f7b-b286-23d07921899c" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_52c7994d-b895-4399-89d8-acb9f12d2e98" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_52c7994d-b895-4399-89d8-acb9f12d2e98_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_52c7994d-b895-4399-89d8-acb9f12d2e98" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_52c7994d-b895-4399-89d8-acb9f12d2e98_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_ec76f2c1-4c51-433a-9b6c-e75fe506bdc4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_52c7994d-b895-4399-89d8-acb9f12d2e98" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_ec76f2c1-4c51-433a-9b6c-e75fe506bdc4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputDiscountRateMember_6ed84662-8218-483d-8e7a-fcaaccbd3aa1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MeasurementInputDiscountRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_ec76f2c1-4c51-433a-9b6c-e75fe506bdc4" xlink:to="loc_us-gaap_MeasurementInputDiscountRateMember_6ed84662-8218-483d-8e7a-fcaaccbd3aa1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MeasurementInputProbabilityofPaymentMember_5f373a58-02b6-4dec-a485-2b351857485e" xlink:href="livn-20231231.xsd#livn_MeasurementInputProbabilityofPaymentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_ec76f2c1-4c51-433a-9b6c-e75fe506bdc4" xlink:to="loc_livn_MeasurementInputProbabilityofPaymentMember_5f373a58-02b6-4dec-a485-2b351857485e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MeasurementInputRiskadjustedDiscountRateMember_4ddecb8c-f3ce-43b9-bdd1-877ddd16ee8e" xlink:href="livn-20231231.xsd#livn_MeasurementInputRiskadjustedDiscountRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_ec76f2c1-4c51-433a-9b6c-e75fe506bdc4" xlink:to="loc_livn_MeasurementInputRiskadjustedDiscountRateMember_4ddecb8c-f3ce-43b9-bdd1-877ddd16ee8e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MeasurementInputCreditRiskDiscountRateMember_9af63eed-07c6-4704-b954-e53864d08c12" xlink:href="livn-20231231.xsd#livn_MeasurementInputCreditRiskDiscountRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_ec76f2c1-4c51-433a-9b6c-e75fe506bdc4" xlink:to="loc_livn_MeasurementInputCreditRiskDiscountRateMember_9af63eed-07c6-4704-b954-e53864d08c12" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MeasurementInputRevenueVolatilityMember_abab104c-67cb-4424-9701-80cb3fc2a906" xlink:href="livn-20231231.xsd#livn_MeasurementInputRevenueVolatilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_ec76f2c1-4c51-433a-9b6c-e75fe506bdc4" xlink:to="loc_livn_MeasurementInputRevenueVolatilityMember_abab104c-67cb-4424-9701-80cb3fc2a906" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueAxis_194c3b9f-e36b-45e5-8260-91f51cf478b8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationTechniqueAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_d4dc3ece-755f-4f7b-b286-23d07921899c" xlink:to="loc_us-gaap_ValuationTechniqueAxis_194c3b9f-e36b-45e5-8260-91f51cf478b8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_194c3b9f-e36b-45e5-8260-91f51cf478b8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationTechniqueAxis_194c3b9f-e36b-45e5-8260-91f51cf478b8" xlink:to="loc_us-gaap_ValuationTechniqueDomain_194c3b9f-e36b-45e5-8260-91f51cf478b8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDomain_128650bc-66d0-472a-817c-1f9a1a38dae1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationTechniqueDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationTechniqueAxis_194c3b9f-e36b-45e5-8260-91f51cf478b8" xlink:to="loc_us-gaap_ValuationTechniqueDomain_128650bc-66d0-472a-817c-1f9a1a38dae1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_ef35bc8d-7749-47e2-b16a-66accf7aaa96" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationTechniqueDiscountedCashFlowMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_128650bc-66d0-472a-817c-1f9a1a38dae1" xlink:to="loc_us-gaap_ValuationTechniqueDiscountedCashFlowMember_ef35bc8d-7749-47e2-b16a-66accf7aaa96" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ValuationTechniqueMonteCarloSimulationMember_7d11c43b-a069-456c-8af6-88e2e06a0991" xlink:href="livn-20231231.xsd#livn_ValuationTechniqueMonteCarloSimulationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationTechniqueDomain_128650bc-66d0-472a-817c-1f9a1a38dae1" xlink:to="loc_livn_ValuationTechniqueMonteCarloSimulationMember_7d11c43b-a069-456c-8af6-88e2e06a0991" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_c405b800-a049-4367-9a4c-008301e470cc" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_d4dc3ece-755f-4f7b-b286-23d07921899c" xlink:to="loc_srt_RangeAxis_c405b800-a049-4367-9a4c-008301e470cc" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c405b800-a049-4367-9a4c-008301e470cc_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_c405b800-a049-4367-9a4c-008301e470cc" xlink:to="loc_srt_RangeMember_c405b800-a049-4367-9a4c-008301e470cc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_b77aa4ad-5fc3-458e-bbe8-00449fa77826" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_c405b800-a049-4367-9a4c-008301e470cc" xlink:to="loc_srt_RangeMember_b77aa4ad-5fc3-458e-bbe8-00449fa77826" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_133dc5af-a35b-4a16-9b39-3e24006becd2" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_b77aa4ad-5fc3-458e-bbe8-00449fa77826" xlink:to="loc_srt_MinimumMember_133dc5af-a35b-4a16-9b39-3e24006becd2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_bd1fbfc4-c932-41a8-aaa0-af88f9b3199b" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_b77aa4ad-5fc3-458e-bbe8-00449fa77826" xlink:to="loc_srt_MaximumMember_bd1fbfc4-c932-41a8-aaa0-af88f9b3199b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput_5fff20b2-d9bb-4773-8ef8-4ed3aec89dc7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_de6c6c14-0475-4bb4-ae43-f3fa860c4d52" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiabilityMeasurementInput_5fff20b2-d9bb-4773-8ef8-4ed3aec89dc7" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/FinancingArrangementsLongTermDebtOutstandingDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#FinancingArrangementsLongTermDebtOutstandingDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/FinancingArrangementsLongTermDebtOutstandingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_b6093638-738c-4622-8330-8f61b6049ec9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_f814f9ed-5065-4b44-8312-053781f3aab8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b6093638-738c-4622-8330-8f61b6049ec9" xlink:to="loc_us-gaap_DebtInstrumentTable_f814f9ed-5065-4b44-8312-053781f3aab8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityAxis_3a942373-59d0-453f-8f54-f4e91ef230d0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_f814f9ed-5065-4b44-8312-053781f3aab8" xlink:to="loc_us-gaap_LineOfCreditFacilityAxis_3a942373-59d0-453f-8f54-f4e91ef230d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_3a942373-59d0-453f-8f54-f4e91ef230d0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_3a942373-59d0-453f-8f54-f4e91ef230d0" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_3a942373-59d0-453f-8f54-f4e91ef230d0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_7500a0a4-fd9d-47e5-b182-3ff64cf60e1d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_3a942373-59d0-453f-8f54-f4e91ef230d0" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_7500a0a4-fd9d-47e5-b182-3ff64cf60e1d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_BankofAmericaU.SMember_c9a275cf-b68a-4964-9dca-42d722e86ceb" xlink:href="livn-20231231.xsd#livn_BankofAmericaU.SMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_7500a0a4-fd9d-47e5-b182-3ff64cf60e1d" xlink:to="loc_livn_BankofAmericaU.SMember_c9a275cf-b68a-4964-9dca-42d722e86ceb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_BankofAmericaMerrillLynchBancoMultiploS.A.Member_04c012a7-aba9-4e1e-97d9-f2d33fb0f290" xlink:href="livn-20231231.xsd#livn_BankofAmericaMerrillLynchBancoMultiploS.A.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_7500a0a4-fd9d-47e5-b182-3ff64cf60e1d" xlink:to="loc_livn_BankofAmericaMerrillLynchBancoMultiploS.A.Member_04c012a7-aba9-4e1e-97d9-f2d33fb0f290" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MediocreditoItalianoMember_0a3bceda-f477-4dfd-902b-2ee1acae30fd" xlink:href="livn-20231231.xsd#livn_MediocreditoItalianoMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_7500a0a4-fd9d-47e5-b182-3ff64cf60e1d" xlink:to="loc_livn_MediocreditoItalianoMember_0a3bceda-f477-4dfd-902b-2ee1acae30fd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_4851e27a-e4ae-4d51-b348-67449d4483b1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_f814f9ed-5065-4b44-8312-053781f3aab8" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_4851e27a-e4ae-4d51-b348-67449d4483b1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4851e27a-e4ae-4d51-b348-67449d4483b1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4851e27a-e4ae-4d51-b348-67449d4483b1" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4851e27a-e4ae-4d51-b348-67449d4483b1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_da9a8274-a1ed-40b3-abb0-ade65120f8f6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4851e27a-e4ae-4d51-b348-67449d4483b1" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_da9a8274-a1ed-40b3-abb0-ade65120f8f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TermLoanMember_2a64d8f9-e808-4d80-9ed3-47912db84b3a" xlink:href="livn-20231231.xsd#livn_TermLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_da9a8274-a1ed-40b3-abb0-ade65120f8f6" xlink:to="loc_livn_TermLoanMember_2a64d8f9-e808-4d80-9ed3-47912db84b3a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_58f23e1c-ee53-4010-b4cb-48e72ac942f9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_da9a8274-a1ed-40b3-abb0-ade65120f8f6" xlink:to="loc_us-gaap_SeniorNotesMember_58f23e1c-ee53-4010-b4cb-48e72ac942f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LoansPayableMember_289fae38-19ad-42a9-b772-9b2800ba704d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LoansPayableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_da9a8274-a1ed-40b3-abb0-ade65120f8f6" xlink:to="loc_us-gaap_LoansPayableMember_289fae38-19ad-42a9-b772-9b2800ba704d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_7cebd220-9727-4191-a990-fd5904f8d422" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_da9a8274-a1ed-40b3-abb0-ade65120f8f6" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_7cebd220-9727-4191-a990-fd5904f8d422" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_4791fb5d-cc22-42db-9d0c-406b2a5c157f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b6093638-738c-4622-8330-8f61b6049ec9" xlink:to="loc_us-gaap_LongTermDebt_4791fb5d-cc22-42db-9d0c-406b2a5c157f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_58419163-7df7-4193-b957-c1c3c0dcbef3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b6093638-738c-4622-8330-8f61b6049ec9" xlink:to="loc_us-gaap_LongTermDebtCurrent_58419163-7df7-4193-b957-c1c3c0dcbef3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_0ebed4f9-ef07-4987-a29b-40030a7eee2d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b6093638-738c-4622-8330-8f61b6049ec9" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_0ebed4f9-ef07-4987-a29b-40030a7eee2d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_34bac6fc-52f5-4516-b25b-9d2827aa3517" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_b6093638-738c-4622-8330-8f61b6049ec9" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_34bac6fc-52f5-4516-b25b-9d2827aa3517" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/FinancingArrangementsNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#FinancingArrangementsNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/FinancingArrangementsNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_3f8e8aa8-5455-4fa4-a10a-91f06046cae1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:to="loc_us-gaap_CreditFacilityAxis_3f8e8aa8-5455-4fa4-a10a-91f06046cae1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_3f8e8aa8-5455-4fa4-a10a-91f06046cae1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_3f8e8aa8-5455-4fa4-a10a-91f06046cae1" xlink:to="loc_us-gaap_CreditFacilityDomain_3f8e8aa8-5455-4fa4-a10a-91f06046cae1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_fc8e1d5e-925a-4eda-82f6-f40f380c5278" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_3f8e8aa8-5455-4fa4-a10a-91f06046cae1" xlink:to="loc_us-gaap_CreditFacilityDomain_fc8e1d5e-925a-4eda-82f6-f40f380c5278" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_9723134d-714a-444a-89d3-16313efe06d1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_fc8e1d5e-925a-4eda-82f6-f40f380c5278" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_9723134d-714a-444a-89d3-16313efe06d1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_b2f23777-786d-4273-952b-521a9b4020af" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:to="loc_srt_RangeAxis_b2f23777-786d-4273-952b-521a9b4020af" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_b2f23777-786d-4273-952b-521a9b4020af_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_b2f23777-786d-4273-952b-521a9b4020af" xlink:to="loc_srt_RangeMember_b2f23777-786d-4273-952b-521a9b4020af_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_a517b555-5e16-4457-9f1d-e0642e3d4be2" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_b2f23777-786d-4273-952b-521a9b4020af" xlink:to="loc_srt_RangeMember_a517b555-5e16-4457-9f1d-e0642e3d4be2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_af25cfd7-9dff-4a0b-b5ff-db036cd58c83" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_a517b555-5e16-4457-9f1d-e0642e3d4be2" xlink:to="loc_srt_MinimumMember_af25cfd7-9dff-4a0b-b5ff-db036cd58c83" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_cf8d2364-9191-4859-8dcb-c5c7b0cda271" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_a517b555-5e16-4457-9f1d-e0642e3d4be2" xlink:to="loc_srt_MaximumMember_cf8d2364-9191-4859-8dcb-c5c7b0cda271" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_4eeccffb-70b8-4fef-b2de-af2a0efe1235" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_4eeccffb-70b8-4fef-b2de-af2a0efe1235" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_4eeccffb-70b8-4fef-b2de-af2a0efe1235_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4eeccffb-70b8-4fef-b2de-af2a0efe1235" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_4eeccffb-70b8-4fef-b2de-af2a0efe1235_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_df3a17ec-ce6a-4989-b0c3-ce9607e3b4b4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_4eeccffb-70b8-4fef-b2de-af2a0efe1235" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_df3a17ec-ce6a-4989-b0c3-ce9607e3b4b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BridgeLoanMember_2117016f-27b0-4926-85f0-cf1c15dcceb9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BridgeLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_df3a17ec-ce6a-4989-b0c3-ce9607e3b4b4" xlink:to="loc_us-gaap_BridgeLoanMember_2117016f-27b0-4926-85f0-cf1c15dcceb9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_64d25cad-236a-4b87-8aaf-905f9868db55" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_df3a17ec-ce6a-4989-b0c3-ce9607e3b4b4" xlink:to="loc_us-gaap_LineOfCreditMember_64d25cad-236a-4b87-8aaf-905f9868db55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorNotesMember_35cf29c2-4e23-4b33-ae9b-3b61139eef09" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SeniorNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_df3a17ec-ce6a-4989-b0c3-ce9607e3b4b4" xlink:to="loc_us-gaap_SeniorNotesMember_35cf29c2-4e23-4b33-ae9b-3b61139eef09" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_f6fef668-b339-40a8-8d3a-0de3a9c7e329" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_df3a17ec-ce6a-4989-b0c3-ce9607e3b4b4" xlink:to="loc_us-gaap_SecuredDebtMember_f6fef668-b339-40a8-8d3a-0de3a9c7e329" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_d3fd4ea4-5365-4486-b4f0-c45400318ef8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShortTermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_d3fd4ea4-5365-4486-b4f0-c45400318ef8" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_d3fd4ea4-5365-4486-b4f0-c45400318ef8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_d3fd4ea4-5365-4486-b4f0-c45400318ef8" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_d3fd4ea4-5365-4486-b4f0-c45400318ef8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_83d9ef0f-1efc-4732-ba82-5120fed30fb8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_d3fd4ea4-5365-4486-b4f0-c45400318ef8" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_83d9ef0f-1efc-4732-ba82-5120fed30fb8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BridgeLoanMember_849451b4-0618-4d56-95db-41c586b338f1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BridgeLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_83d9ef0f-1efc-4732-ba82-5120fed30fb8" xlink:to="loc_us-gaap_BridgeLoanMember_849451b4-0618-4d56-95db-41c586b338f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_a223a60f-086d-4b2c-9d72-8afc5eebc537" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_a223a60f-086d-4b2c-9d72-8afc5eebc537" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_a223a60f-086d-4b2c-9d72-8afc5eebc537_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_a223a60f-086d-4b2c-9d72-8afc5eebc537" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_a223a60f-086d-4b2c-9d72-8afc5eebc537_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_ea31ca03-3148-413c-9d4b-48ba0c513dc7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_a223a60f-086d-4b2c-9d72-8afc5eebc537" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_ea31ca03-3148-413c-9d4b-48ba0c513dc7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CappedCallMember_46fe577f-f24e-42a9-9d2f-8ff08dc15973" xlink:href="livn-20231231.xsd#livn_CappedCallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ea31ca03-3148-413c-9d4b-48ba0c513dc7" xlink:to="loc_livn_CappedCallMember_46fe577f-f24e-42a9-9d2f-8ff08dc15973" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_51c3f2a0-7950-45f1-8261-443fe871523f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:to="loc_us-gaap_VariableRateAxis_51c3f2a0-7950-45f1-8261-443fe871523f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_51c3f2a0-7950-45f1-8261-443fe871523f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_51c3f2a0-7950-45f1-8261-443fe871523f" xlink:to="loc_us-gaap_VariableRateDomain_51c3f2a0-7950-45f1-8261-443fe871523f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_a2afa0aa-c2f2-413b-9899-690964595ac5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_51c3f2a0-7950-45f1-8261-443fe871523f" xlink:to="loc_us-gaap_VariableRateDomain_a2afa0aa-c2f2-413b-9899-690964595ac5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_SecuredOvernightFinancingRateSOFRMember_d1758a1b-dc72-4691-9538-2326a2841f7a" xlink:href="livn-20231231.xsd#livn_SecuredOvernightFinancingRateSOFRMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_a2afa0aa-c2f2-413b-9899-690964595ac5" xlink:to="loc_livn_SecuredOvernightFinancingRateSOFRMember_d1758a1b-dc72-4691-9538-2326a2841f7a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_de5b78cb-5875-49d0-af7a-78d6f10a868a" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:to="loc_srt_LitigationCaseAxis_de5b78cb-5875-49d0-af7a-78d6f10a868a" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_de5b78cb-5875-49d0-af7a-78d6f10a868a_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_de5b78cb-5875-49d0-af7a-78d6f10a868a" xlink:to="loc_srt_LitigationCaseTypeDomain_de5b78cb-5875-49d0-af7a-78d6f10a868a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_a6f77c1d-b066-4159-ad38-5633b7f72ccc" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_de5b78cb-5875-49d0-af7a-78d6f10a868a" xlink:to="loc_srt_LitigationCaseTypeDomain_a6f77c1d-b066-4159-ad38-5633b7f72ccc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_SNIAMember_931fd368-4abf-4538-ae66-3c55c9f13e8c" xlink:href="livn-20231231.xsd#livn_SNIAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_a6f77c1d-b066-4159-ad38-5633b7f72ccc" xlink:to="loc_livn_SNIAMember_931fd368-4abf-4538-ae66-3c55c9f13e8c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusAxis_99482373-1a6f-43f3-9bd7-8d8b932ea3a1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationStatusAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:to="loc_us-gaap_LitigationStatusAxis_99482373-1a6f-43f3-9bd7-8d8b932ea3a1" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain_99482373-1a6f-43f3-9bd7-8d8b932ea3a1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LitigationStatusAxis_99482373-1a6f-43f3-9bd7-8d8b932ea3a1" xlink:to="loc_us-gaap_LitigationStatusDomain_99482373-1a6f-43f3-9bd7-8d8b932ea3a1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain_7e7eed03-4521-4fd5-a3a8-e5524f993d92" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LitigationStatusAxis_99482373-1a6f-43f3-9bd7-8d8b932ea3a1" xlink:to="loc_us-gaap_LitigationStatusDomain_7e7eed03-4521-4fd5-a3a8-e5524f993d92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_JudicialRulingMember_7fd349dd-a0ce-4352-8704-7f11e5535fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_JudicialRulingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LitigationStatusDomain_7e7eed03-4521-4fd5-a3a8-e5524f993d92" xlink:to="loc_us-gaap_JudicialRulingMember_7fd349dd-a0ce-4352-8704-7f11e5535fa0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityAxis_d9ad47b8-d779-4e21-b191-87144cac6a4c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:to="loc_us-gaap_LineOfCreditFacilityAxis_d9ad47b8-d779-4e21-b191-87144cac6a4c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_d9ad47b8-d779-4e21-b191-87144cac6a4c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_d9ad47b8-d779-4e21-b191-87144cac6a4c" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_d9ad47b8-d779-4e21-b191-87144cac6a4c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_7d574dff-d784-4386-aad0-67ec100948b7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityLenderDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_d9ad47b8-d779-4e21-b191-87144cac6a4c" xlink:to="loc_us-gaap_LineOfCreditFacilityLenderDomain_7d574dff-d784-4386-aad0-67ec100948b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_GoldmanSachsBankUSAMember_2b85aba7-1110-4903-ba8e-709434379456" xlink:href="livn-20231231.xsd#livn_GoldmanSachsBankUSAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_7d574dff-d784-4386-aad0-67ec100948b7" xlink:to="loc_livn_GoldmanSachsBankUSAMember_2b85aba7-1110-4903-ba8e-709434379456" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_5b688a16-2c4a-4e94-9e36-13cb32b88a35" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_72392dd8-bdd6-4f03-8617-5a8adfb47011" xlink:to="loc_us-gaap_DebtInstrumentAxis_5b688a16-2c4a-4e94-9e36-13cb32b88a35" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_5b688a16-2c4a-4e94-9e36-13cb32b88a35_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_5b688a16-2c4a-4e94-9e36-13cb32b88a35" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_5b688a16-2c4a-4e94-9e36-13cb32b88a35_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_1afbf8a1-fb47-4c40-bd4b-e12beb0d5da8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_5b688a16-2c4a-4e94-9e36-13cb32b88a35" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_1afbf8a1-fb47-4c40-bd4b-e12beb0d5da8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_InitialTermFacilityMember_1d092e1b-f2b5-41b0-b000-d740f9894bd1" xlink:href="livn-20231231.xsd#livn_InitialTermFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_1afbf8a1-fb47-4c40-bd4b-e12beb0d5da8" xlink:to="loc_livn_InitialTermFacilityMember_1d092e1b-f2b5-41b0-b000-d740f9894bd1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DelayedDrawTermFacilityMember_b716537f-d542-4e19-a3ef-bab2995ce93c" xlink:href="livn-20231231.xsd#livn_DelayedDrawTermFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_1afbf8a1-fb47-4c40-bd4b-e12beb0d5da8" xlink:to="loc_livn_DelayedDrawTermFacilityMember_b716537f-d542-4e19-a3ef-bab2995ce93c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermBorrowings_0e719d12-8629-4eb4-9061-06d27cd8dadf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShortTermBorrowings"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_ShortTermBorrowings_0e719d12-8629-4eb4-9061-06d27cd8dadf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_dfa81d6a-3c26-4ad9-9ccc-c15f9808225e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_dfa81d6a-3c26-4ad9-9ccc-c15f9808225e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTerm_83232f5d-e7cc-4e2d-abd5-bd7fd2e67b12" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentTerm_83232f5d-e7cc-4e2d-abd5-bd7fd2e67b12" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_304306f8-af3e-47fb-9957-6d9876bb0243" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_304306f8-af3e-47fb-9957-6d9876bb0243" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentSOFRFloorRate_e2f4a81c-847b-47ac-a46e-db4ee800ab3c" xlink:href="livn-20231231.xsd#livn_DebtInstrumentSOFRFloorRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentSOFRFloorRate_e2f4a81c-847b-47ac-a46e-db4ee800ab3c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_f6696320-8d19-445d-8573-f2aa3b763780" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCreditFacilityCommitmentFeePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_LineOfCreditFacilityCommitmentFeePercentage_f6696320-8d19-445d-8573-f2aa3b763780" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_1e79ff25-b9cc-476a-bc52-d9662d6c3258" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ExtinguishmentOfDebtAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_ExtinguishmentOfDebtAmount_1e79ff25-b9cc-476a-bc52-d9662d6c3258" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01536be7-9205-430a-8c56-e25f232b25ea" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_01536be7-9205-430a-8c56-e25f232b25ea" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_575a9a9a-3bca-48de-b476-34d041e8db5f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LineOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_LineOfCredit_575a9a9a-3bca-48de-b476-34d041e8db5f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_LossContingencyAccrualPercentageOfCashCollateralRequiredAsGuarantee_8652b1ba-adaf-4456-9a02-d3700da92d34" xlink:href="livn-20231231.xsd#livn_LossContingencyAccrualPercentageOfCashCollateralRequiredAsGuarantee"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_LossContingencyAccrualPercentageOfCashCollateralRequiredAsGuarantee_8652b1ba-adaf-4456-9a02-d3700da92d34" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_5f18fc65-c75d-4051-a6d6-2d61160caca1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_5f18fc65-c75d-4051-a6d6-2d61160caca1" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_b1e23a58-5b63-4e6e-bc34-967005989c9b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_b1e23a58-5b63-4e6e-bc34-967005989c9b" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_3a547986-7315-4ffc-a159-c8d6d270e124" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_3a547986-7315-4ffc-a159-c8d6d270e124" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_f66577c1-e022-41bd-9541-b0407fece376" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromLongTermLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_ProceedsFromLongTermLinesOfCredit_f66577c1-e022-41bd-9541-b0407fece376" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentTermDaysToMaturity_5ce8a99b-4439-48b5-a46b-dd393c5e2473" xlink:href="livn-20231231.xsd#livn_DebtInstrumentTermDaysToMaturity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentTermDaysToMaturity_5ce8a99b-4439-48b5-a46b-dd393c5e2473" xlink:type="arc" order="14"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_1dbeb3de-d39e-48e6-83bd-870b1f0adeea" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_1dbeb3de-d39e-48e6-83bd-870b1f0adeea" xlink:type="arc" order="15"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentDiscountRate_c141c9b0-d9f7-40cb-938c-0d237001e77e" xlink:href="livn-20231231.xsd#livn_DebtInstrumentDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentDiscountRate_c141c9b0-d9f7-40cb-938c-0d237001e77e" xlink:type="arc" order="16"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentAmortizationPercentageYearOne_a24363cc-298e-41c1-807d-4a3d8853a8ea" xlink:href="livn-20231231.xsd#livn_DebtInstrumentAmortizationPercentageYearOne"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentAmortizationPercentageYearOne_a24363cc-298e-41c1-807d-4a3d8853a8ea" xlink:type="arc" order="17"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentAmortizationPercentageYearTwo_87d39e63-5113-4796-ab43-14ee7b821086" xlink:href="livn-20231231.xsd#livn_DebtInstrumentAmortizationPercentageYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentAmortizationPercentageYearTwo_87d39e63-5113-4796-ab43-14ee7b821086" xlink:type="arc" order="18"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentAmortizationPercentageYearThree_bc99b1bc-9895-4aa6-8578-2a3611dee64a" xlink:href="livn-20231231.xsd#livn_DebtInstrumentAmortizationPercentageYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentAmortizationPercentageYearThree_bc99b1bc-9895-4aa6-8578-2a3611dee64a" xlink:type="arc" order="19"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentAmortizationPercentageYearFour_b451df71-ba60-40e8-99c8-c3170232b0b0" xlink:href="livn-20231231.xsd#livn_DebtInstrumentAmortizationPercentageYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentAmortizationPercentageYearFour_b451df71-ba60-40e8-99c8-c3170232b0b0" xlink:type="arc" order="20"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentAmortizationPercentageYearFive_c71f7bbc-f704-4094-b130-bfd2bbfd124e" xlink:href="livn-20231231.xsd#livn_DebtInstrumentAmortizationPercentageYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentAmortizationPercentageYearFive_c71f7bbc-f704-4094-b130-bfd2bbfd124e" xlink:type="arc" order="21"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentCovenantConsolidatedNetLeverageRatioThresholdForFourConsecutiveFiscalQuarters_83e7267b-dec3-4aac-a692-d9cdd6d68012" xlink:href="livn-20231231.xsd#livn_DebtInstrumentCovenantConsolidatedNetLeverageRatioThresholdForFourConsecutiveFiscalQuarters"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentCovenantConsolidatedNetLeverageRatioThresholdForFourConsecutiveFiscalQuarters_83e7267b-dec3-4aac-a692-d9cdd6d68012" xlink:type="arc" order="22"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentCovenantInterestCoverageRatioThresholdForFourConsecutiveFiscalQuarters_f875f2dd-82f5-4460-9e16-b54d96bcb16b" xlink:href="livn-20231231.xsd#livn_DebtInstrumentCovenantInterestCoverageRatioThresholdForFourConsecutiveFiscalQuarters"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentCovenantInterestCoverageRatioThresholdForFourConsecutiveFiscalQuarters_f875f2dd-82f5-4460-9e16-b54d96bcb16b" xlink:type="arc" order="23"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_b943cc62-e8ef-423f-a2a6-66c894815304" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_b943cc62-e8ef-423f-a2a6-66c894815304" xlink:type="arc" order="24"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_8ac9a637-da7b-4a06-a86e-05b198def597" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentFaceAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_8ac9a637-da7b-4a06-a86e-05b198def597" xlink:type="arc" order="25"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_c39520c5-00f1-4344-a38b-a106f3c65e9c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_c39520c5-00f1-4344-a38b-a106f3c65e9c" xlink:type="arc" order="26"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_150a42ec-1f3b-42c9-8577-575a563eba1f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_150a42ec-1f3b-42c9-8577-575a563eba1f" xlink:type="arc" order="27"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_c275d468-727f-4e4a-9228-26524f592644" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_c275d468-727f-4e4a-9228-26524f592644" xlink:type="arc" order="28"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_03b7e2a2-3266-408b-8901-ac42045a698c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_03b7e2a2-3266-408b-8901-ac42045a698c" xlink:type="arc" order="29"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentRedemptionThresholdParValue_92867c37-2b48-456d-af33-044e303b0b12" xlink:href="livn-20231231.xsd#livn_DebtInstrumentRedemptionThresholdParValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentRedemptionThresholdParValue_92867c37-2b48-456d-af33-044e303b0b12" xlink:type="arc" order="30"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentRedemptionPricePercentageOfExchangePrice_48089e0a-101a-4d05-877a-a242df7c586b" xlink:href="livn-20231231.xsd#livn_DebtInstrumentRedemptionPricePercentageOfExchangePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentRedemptionPricePercentageOfExchangePrice_48089e0a-101a-4d05-877a-a242df7c586b" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_5b0ea9d5-7ae0-462d-9b33-9680bb89b2dc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentConvertibleConversionPrice1_5b0ea9d5-7ae0-462d-9b33-9680bb89b2dc" xlink:type="arc" order="32"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentRedemptionThresholdTradingDays_eed83ebb-e8c0-4933-a898-c3b2f744d12e" xlink:href="livn-20231231.xsd#livn_DebtInstrumentRedemptionThresholdTradingDays"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentRedemptionThresholdTradingDays_eed83ebb-e8c0-4933-a898-c3b2f744d12e" xlink:type="arc" order="33"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentRedemptionThresholdConsecutiveTradingDays_520db98a-4530-41ea-89b5-4991bb63a18d" xlink:href="livn-20231231.xsd#livn_DebtInstrumentRedemptionThresholdConsecutiveTradingDays"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentRedemptionThresholdConsecutiveTradingDays_520db98a-4530-41ea-89b5-4991bb63a18d" xlink:type="arc" order="34"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentOptionToExchangePricePerShare_e1f4e556-0a1d-402c-8e65-ce9858dc6a4c" xlink:href="livn-20231231.xsd#livn_DebtInstrumentOptionToExchangePricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentOptionToExchangePricePerShare_e1f4e556-0a1d-402c-8e65-ce9858dc6a4c" xlink:type="arc" order="35"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentRedemptionThresholdMaximumNumberOfTradingDays_0ae04b03-50cb-4198-ad4f-e0a07a432a5f" xlink:href="livn-20231231.xsd#livn_DebtInstrumentRedemptionThresholdMaximumNumberOfTradingDays"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentRedemptionThresholdMaximumNumberOfTradingDays_0ae04b03-50cb-4198-ad4f-e0a07a432a5f" xlink:type="arc" order="36"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_4707ee7e-96fe-4a61-8904-d6742a93e409" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentRedemptionPricePercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DebtInstrumentRedemptionPricePercentage_4707ee7e-96fe-4a61-8904-d6742a93e409" xlink:type="arc" order="37"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability_75126eb8-0355-4b74-999a-442dc6eafbc6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeLiability_75126eb8-0355-4b74-999a-442dc6eafbc6" xlink:type="arc" order="38"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DerivativeCapPricePerShare_79a61d12-09a4-470a-8353-c7f0f52afaac" xlink:href="livn-20231231.xsd#livn_DerivativeCapPricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DerivativeCapPricePerShare_79a61d12-09a4-470a-8353-c7f0f52afaac" xlink:type="arc" order="39"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_fba62046-8e2e-40b0-8a72-66314d1a97e0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_DerivativeAssets_fba62046-8e2e-40b0-8a72-66314d1a97e0" xlink:type="arc" order="40"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DebtInstrumentExchangeableConversionRatio_9a50efba-e1a1-4f5d-b00b-88e1fb995b59" xlink:href="livn-20231231.xsd#livn_DebtInstrumentExchangeableConversionRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_DebtInstrumentExchangeableConversionRatio_9a50efba-e1a1-4f5d-b00b-88e1fb995b59" xlink:type="arc" order="41"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfDebt_014954ab-8266-4a50-a7eb-bae709ef5ef0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RepaymentsOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_RepaymentsOfDebt_014954ab-8266-4a50-a7eb-bae709ef5ef0" xlink:type="arc" order="42"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_RepaymentsOfLongTermDebtPremiumPayment_5ab4e482-564a-4fc8-b025-25a8b3d99d48" xlink:href="livn-20231231.xsd#livn_RepaymentsOfLongTermDebtPremiumPayment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_livn_RepaymentsOfLongTermDebtPremiumPayment_5ab4e482-564a-4fc8-b025-25a8b3d99d48" xlink:type="arc" order="43"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_5104eb64-a300-4209-89c5-8c3cec94873a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_3fb86da7-bf39-4f21-9e0f-15cc9dc5ce41" xlink:to="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_5104eb64-a300-4209-89c5-8c3cec94873a" xlink:type="arc" order="44"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/DerivativesandRiskManagementNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#DerivativesandRiskManagementNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/DerivativesandRiskManagementNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_36910c05-942b-4184-b90e-a4586d10e28d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_4c849b18-6782-43d1-be14-9c3b6ec08bcf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_36910c05-942b-4184-b90e-a4586d10e28d" xlink:to="loc_us-gaap_DerivativeTable_4c849b18-6782-43d1-be14-9c3b6ec08bcf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_cfd0562e-5b15-4076-b3bd-23bd212e6af8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_4c849b18-6782-43d1-be14-9c3b6ec08bcf" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_cfd0562e-5b15-4076-b3bd-23bd212e6af8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_cfd0562e-5b15-4076-b3bd-23bd212e6af8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_cfd0562e-5b15-4076-b3bd-23bd212e6af8" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_cfd0562e-5b15-4076-b3bd-23bd212e6af8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_cc9c6c01-b033-4de7-a393-269371358ced" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_cfd0562e-5b15-4076-b3bd-23bd212e6af8" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_cc9c6c01-b033-4de7-a393-269371358ced" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_116a9e6b-8ba4-4abf-832c-bfb62a486496" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_cc9c6c01-b033-4de7-a393-269371358ced" xlink:to="loc_us-gaap_ForeignExchangeContractMember_116a9e6b-8ba4-4abf-832c-bfb62a486496" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_d63caf4d-4086-4ec8-9465-5b84ddfe6209" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_4c849b18-6782-43d1-be14-9c3b6ec08bcf" xlink:to="loc_us-gaap_HedgingDesignationAxis_d63caf4d-4086-4ec8-9465-5b84ddfe6209" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_d63caf4d-4086-4ec8-9465-5b84ddfe6209_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_d63caf4d-4086-4ec8-9465-5b84ddfe6209" xlink:to="loc_us-gaap_HedgingDesignationDomain_d63caf4d-4086-4ec8-9465-5b84ddfe6209_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_451c8e10-636b-4f77-bda6-a13585930f39" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_d63caf4d-4086-4ec8-9465-5b84ddfe6209" xlink:to="loc_us-gaap_HedgingDesignationDomain_451c8e10-636b-4f77-bda6-a13585930f39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_a2da92a8-01f7-409e-9a7a-35ee0acaf397" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_451c8e10-636b-4f77-bda6-a13585930f39" xlink:to="loc_us-gaap_NondesignatedMember_a2da92a8-01f7-409e-9a7a-35ee0acaf397" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_829aab96-c577-4369-aefe-1a29fdbc3a7c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_4c849b18-6782-43d1-be14-9c3b6ec08bcf" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_829aab96-c577-4369-aefe-1a29fdbc3a7c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_829aab96-c577-4369-aefe-1a29fdbc3a7c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_829aab96-c577-4369-aefe-1a29fdbc3a7c" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_829aab96-c577-4369-aefe-1a29fdbc3a7c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_eec7c465-66e4-4c5a-9da1-5e727e30a78b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_829aab96-c577-4369-aefe-1a29fdbc3a7c" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_eec7c465-66e4-4c5a-9da1-5e727e30a78b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ForeignExchangeandOtherMember_f274e240-ac06-4cfe-b7f6-5f1612876b86" xlink:href="livn-20231231.xsd#livn_ForeignExchangeandOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_eec7c465-66e4-4c5a-9da1-5e727e30a78b" xlink:to="loc_livn_ForeignExchangeandOtherMember_f274e240-ac06-4cfe-b7f6-5f1612876b86" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_0d03968a-f7cb-4268-bd59-46ed4e7e002f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_36910c05-942b-4184-b90e-a4586d10e28d" xlink:to="loc_us-gaap_DerivativeNotionalAmount_0d03968a-f7cb-4268-bd59-46ed4e7e002f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_b57f8108-aec6-47a7-bda0-a6184f1cba48" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_36910c05-942b-4184-b90e-a4586d10e28d" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_b57f8108-aec6-47a7-bda0-a6184f1cba48" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/DerivativesandRiskManagementDerivativeNotionalAmountsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#DerivativesandRiskManagementDerivativeNotionalAmountsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/DerivativesandRiskManagementDerivativeNotionalAmountsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_5830c637-8f62-46a1-9329-e711e2d72dbc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_e989114c-62ec-460c-b9cf-249698b3e182" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_5830c637-8f62-46a1-9329-e711e2d72dbc" xlink:to="loc_us-gaap_DerivativeTable_e989114c-62ec-460c-b9cf-249698b3e182" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_5503caf2-03cb-4b70-9689-feabac12a24b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_e989114c-62ec-460c-b9cf-249698b3e182" xlink:to="loc_us-gaap_HedgingDesignationAxis_5503caf2-03cb-4b70-9689-feabac12a24b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_5503caf2-03cb-4b70-9689-feabac12a24b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_5503caf2-03cb-4b70-9689-feabac12a24b" xlink:to="loc_us-gaap_HedgingDesignationDomain_5503caf2-03cb-4b70-9689-feabac12a24b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_92aa034c-947f-4d06-9360-459422a96476" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_5503caf2-03cb-4b70-9689-feabac12a24b" xlink:to="loc_us-gaap_HedgingDesignationDomain_92aa034c-947f-4d06-9360-459422a96476" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_eda78beb-7d9a-47a9-8530-94222aeebdee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_92aa034c-947f-4d06-9360-459422a96476" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_eda78beb-7d9a-47a9-8530-94222aeebdee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_7196dc46-7fdd-473e-9ce7-07bce6915028" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_e989114c-62ec-460c-b9cf-249698b3e182" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_7196dc46-7fdd-473e-9ce7-07bce6915028" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_7196dc46-7fdd-473e-9ce7-07bce6915028_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_7196dc46-7fdd-473e-9ce7-07bce6915028" xlink:to="loc_us-gaap_HedgingRelationshipDomain_7196dc46-7fdd-473e-9ce7-07bce6915028_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_29a50745-fe4e-4d79-a713-48863005eec5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_7196dc46-7fdd-473e-9ce7-07bce6915028" xlink:to="loc_us-gaap_HedgingRelationshipDomain_29a50745-fe4e-4d79-a713-48863005eec5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_9391d074-236c-42b6-b843-872d43ba05f5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_29a50745-fe4e-4d79-a713-48863005eec5" xlink:to="loc_us-gaap_CashFlowHedgingMember_9391d074-236c-42b6-b843-872d43ba05f5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_948819d9-1859-4bcf-9b5c-17b89dd6f367" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_e989114c-62ec-460c-b9cf-249698b3e182" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_948819d9-1859-4bcf-9b5c-17b89dd6f367" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_948819d9-1859-4bcf-9b5c-17b89dd6f367_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_948819d9-1859-4bcf-9b5c-17b89dd6f367" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_948819d9-1859-4bcf-9b5c-17b89dd6f367_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_7f80faa9-ddba-4003-8cd2-6cd3660c9a09" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_948819d9-1859-4bcf-9b5c-17b89dd6f367" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_7f80faa9-ddba-4003-8cd2-6cd3660c9a09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_a2990f22-db64-45b9-9af9-8ed3f94c194b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_7f80faa9-ddba-4003-8cd2-6cd3660c9a09" xlink:to="loc_us-gaap_InterestRateSwapMember_a2990f22-db64-45b9-9af9-8ed3f94c194b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_a29eb71a-ab87-4011-87aa-7aadd2311c2d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_5830c637-8f62-46a1-9329-e711e2d72dbc" xlink:to="loc_us-gaap_DerivativeNotionalAmount_a29eb71a-ab87-4011-87aa-7aadd2311c2d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/DerivativesandRiskManagementAmountofGainLossRecognizedinOCIandIncomeStatementDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#DerivativesandRiskManagementAmountofGainLossRecognizedinOCIandIncomeStatementDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/DerivativesandRiskManagementAmountofGainLossRecognizedinOCIandIncomeStatementDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_f7fd98be-41a3-4a6d-a5a2-37f4d26eea35" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2c9026e4-df80-4c59-b3b9-75d755d9dc43" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_f7fd98be-41a3-4a6d-a5a2-37f4d26eea35" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2c9026e4-df80-4c59-b3b9-75d755d9dc43" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_3266fc20-70d1-46da-b7f5-f2e11a41c3e8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2c9026e4-df80-4c59-b3b9-75d755d9dc43" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_3266fc20-70d1-46da-b7f5-f2e11a41c3e8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_3266fc20-70d1-46da-b7f5-f2e11a41c3e8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_3266fc20-70d1-46da-b7f5-f2e11a41c3e8" xlink:to="loc_us-gaap_HedgingRelationshipDomain_3266fc20-70d1-46da-b7f5-f2e11a41c3e8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_ca191565-a91f-4004-b6a5-090e16ae02fd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_3266fc20-70d1-46da-b7f5-f2e11a41c3e8" xlink:to="loc_us-gaap_HedgingRelationshipDomain_ca191565-a91f-4004-b6a5-090e16ae02fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_20fad603-8b77-4617-a3bd-87bd14120185" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_ca191565-a91f-4004-b6a5-090e16ae02fd" xlink:to="loc_us-gaap_CashFlowHedgingMember_20fad603-8b77-4617-a3bd-87bd14120185" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_b0963802-397e-44cd-a285-abfba214a5f2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2c9026e4-df80-4c59-b3b9-75d755d9dc43" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_b0963802-397e-44cd-a285-abfba214a5f2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_b0963802-397e-44cd-a285-abfba214a5f2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_b0963802-397e-44cd-a285-abfba214a5f2" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_b0963802-397e-44cd-a285-abfba214a5f2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_32907b4a-c3d8-4634-8343-479f37d1a9c1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_b0963802-397e-44cd-a285-abfba214a5f2" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_32907b4a-c3d8-4634-8343-479f37d1a9c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_f10ff901-219d-4cd2-8792-0695b3aac809" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_32907b4a-c3d8-4634-8343-479f37d1a9c1" xlink:to="loc_us-gaap_ForeignExchangeContractMember_f10ff901-219d-4cd2-8792-0695b3aac809" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_a122aadf-4a54-4f04-8695-a6f467cf9afb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_32907b4a-c3d8-4634-8343-479f37d1a9c1" xlink:to="loc_us-gaap_InterestRateSwapMember_a122aadf-4a54-4f04-8695-a6f467cf9afb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_f1d04c5e-3c9f-46c8-be2c-8d30b92f14c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2c9026e4-df80-4c59-b3b9-75d755d9dc43" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_f1d04c5e-3c9f-46c8-be2c-8d30b92f14c8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_f1d04c5e-3c9f-46c8-be2c-8d30b92f14c8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_f1d04c5e-3c9f-46c8-be2c-8d30b92f14c8" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_f1d04c5e-3c9f-46c8-be2c-8d30b92f14c8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_d8833fce-0703-4dd1-b375-741539598a72" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_f1d04c5e-3c9f-46c8-be2c-8d30b92f14c8" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_d8833fce-0703-4dd1-b375-741539598a72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ForeignExchangeandOtherMember_584371cb-af70-415c-a2c1-34d21d80f358" xlink:href="livn-20231231.xsd#livn_ForeignExchangeandOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_d8833fce-0703-4dd1-b375-741539598a72" xlink:to="loc_livn_ForeignExchangeandOtherMember_584371cb-af70-415c-a2c1-34d21d80f358" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpensesMember_af7fba0a-4440-4d8a-8cd3-d96253fd12ef" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SellingGeneralAndAdministrativeExpensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_d8833fce-0703-4dd1-b375-741539598a72" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpensesMember_af7fba0a-4440-4d8a-8cd3-d96253fd12ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseMember_d2a1e94b-8c4a-4b0a-9bf2-8ba21f44b65f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_d8833fce-0703-4dd1-b375-741539598a72" xlink:to="loc_us-gaap_InterestExpenseMember_d2a1e94b-8c4a-4b0a-9bf2-8ba21f44b65f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_9eef8308-ebea-408a-b561-4f028571f4d3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_2c9026e4-df80-4c59-b3b9-75d755d9dc43" xlink:to="loc_us-gaap_HedgingDesignationAxis_9eef8308-ebea-408a-b561-4f028571f4d3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_9eef8308-ebea-408a-b561-4f028571f4d3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_9eef8308-ebea-408a-b561-4f028571f4d3" xlink:to="loc_us-gaap_HedgingDesignationDomain_9eef8308-ebea-408a-b561-4f028571f4d3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_0ed7dfc2-6a03-4bcc-8790-0cde51534794" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_9eef8308-ebea-408a-b561-4f028571f4d3" xlink:to="loc_us-gaap_HedgingDesignationDomain_0ed7dfc2-6a03-4bcc-8790-0cde51534794" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_5a94bfc0-32fd-4dd7-af67-33501a8afbfc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_0ed7dfc2-6a03-4bcc-8790-0cde51534794" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_5a94bfc0-32fd-4dd7-af67-33501a8afbfc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_2e8ec757-d066-4c46-a585-fe24f2e540cd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_f7fd98be-41a3-4a6d-a5a2-37f4d26eea35" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax_2e8ec757-d066-4c46-a585-fe24f2e540cd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_1636c610-0865-4173-8181-735e5a90e26b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_f7fd98be-41a3-4a6d-a5a2-37f4d26eea35" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_1636c610-0865-4173-8181-735e5a90e26b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/DerivativesandRiskManagementFairValueofDerivativeInstrumentsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#DerivativesandRiskManagementFairValueofDerivativeInstrumentsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/DerivativesandRiskManagementFairValueofDerivativeInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_5b910aaf-62d7-4c3d-b67d-8eba88435bbc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_18d7ea68-82bc-41a0-8fd1-11f04769d41f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_5b910aaf-62d7-4c3d-b67d-8eba88435bbc" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_18d7ea68-82bc-41a0-8fd1-11f04769d41f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_665862e6-5ff7-4912-a570-e7f33182e5b0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_18d7ea68-82bc-41a0-8fd1-11f04769d41f" xlink:to="loc_us-gaap_HedgingDesignationAxis_665862e6-5ff7-4912-a570-e7f33182e5b0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_665862e6-5ff7-4912-a570-e7f33182e5b0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_665862e6-5ff7-4912-a570-e7f33182e5b0" xlink:to="loc_us-gaap_HedgingDesignationDomain_665862e6-5ff7-4912-a570-e7f33182e5b0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_ebc2d785-f6c0-4b2e-bd27-7267ba58ac65" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_665862e6-5ff7-4912-a570-e7f33182e5b0" xlink:to="loc_us-gaap_HedgingDesignationDomain_ebc2d785-f6c0-4b2e-bd27-7267ba58ac65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_80e29425-37d6-498f-9b64-9026cf733b98" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_ebc2d785-f6c0-4b2e-bd27-7267ba58ac65" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_80e29425-37d6-498f-9b64-9026cf733b98" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_c6d7df95-ecf7-4a98-8dd3-ed9b8cf61106" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_ebc2d785-f6c0-4b2e-bd27-7267ba58ac65" xlink:to="loc_us-gaap_NondesignatedMember_c6d7df95-ecf7-4a98-8dd3-ed9b8cf61106" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_1ea02d5c-427b-48fd-b9ab-36960e70a9e0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_18d7ea68-82bc-41a0-8fd1-11f04769d41f" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_1ea02d5c-427b-48fd-b9ab-36960e70a9e0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_1ea02d5c-427b-48fd-b9ab-36960e70a9e0_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_1ea02d5c-427b-48fd-b9ab-36960e70a9e0" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_1ea02d5c-427b-48fd-b9ab-36960e70a9e0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_ab980b37-ed1b-448f-b964-4c77fa525505" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_1ea02d5c-427b-48fd-b9ab-36960e70a9e0" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_ab980b37-ed1b-448f-b964-4c77fa525505" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_6758f6ff-753c-474b-881d-bc2c722b9289" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ab980b37-ed1b-448f-b964-4c77fa525505" xlink:to="loc_us-gaap_InterestRateSwapMember_6758f6ff-753c-474b-881d-bc2c722b9289" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CappedCallMember_c752adb9-8602-4ce7-ab04-8199f326ca1e" xlink:href="livn-20231231.xsd#livn_CappedCallMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ab980b37-ed1b-448f-b964-4c77fa525505" xlink:to="loc_livn_CappedCallMember_c752adb9-8602-4ce7-ab04-8199f326ca1e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_4720b48a-8cbb-4ecf-a3a9-3dfd0d804f6a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ab980b37-ed1b-448f-b964-4c77fa525505" xlink:to="loc_us-gaap_ForeignExchangeContractMember_4720b48a-8cbb-4ecf-a3a9-3dfd0d804f6a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_92caa411-ed48-489b-8ef7-573c779a151d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmbeddedDerivativeFinancialInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_ab980b37-ed1b-448f-b964-4c77fa525505" xlink:to="loc_us-gaap_EmbeddedDerivativeFinancialInstrumentsMember_92caa411-ed48-489b-8ef7-573c779a151d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_7ce8147b-fd82-46d6-86f7-9b97bb22f7ff" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_5b910aaf-62d7-4c3d-b67d-8eba88435bbc" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_7ce8147b-fd82-46d6-86f7-9b97bb22f7ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_5a682eff-a9d4-4c72-99c8-91c2434be30f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_5b910aaf-62d7-4c3d-b67d-8eba88435bbc" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_5a682eff-a9d4-4c72-99c8-91c2434be30f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_31bb9356-c31c-4438-9c4d-4687e74d4268" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_5b910aaf-62d7-4c3d-b67d-8eba88435bbc" xlink:to="loc_us-gaap_DerivativeAssets_31bb9356-c31c-4438-9c4d-4687e74d4268" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_1677a02a-68bb-4d29-9b6e-90a78ad73833" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_5b910aaf-62d7-4c3d-b67d-8eba88435bbc" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_1677a02a-68bb-4d29-9b6e-90a78ad73833" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesNoncurrent_8cb67863-c842-4e0b-8d1b-0f9a70161e5c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_5b910aaf-62d7-4c3d-b67d-8eba88435bbc" xlink:to="loc_us-gaap_DerivativeLiabilitiesNoncurrent_8cb67863-c842-4e0b-8d1b-0f9a70161e5c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_e856b88c-509e-4224-9137-b6f154c8e022" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_5b910aaf-62d7-4c3d-b67d-8eba88435bbc" xlink:to="loc_us-gaap_DerivativeLiabilities_e856b88c-509e-4224-9137-b6f154c8e022" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#CommitmentsandContingenciesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/CommitmentsandContingenciesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherCommitmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCommitmentsTable_05ccf5dd-acf6-44be-b3f5-51b8c7b12374" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherCommitmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_us-gaap_OtherCommitmentsTable_05ccf5dd-acf6-44be-b3f5-51b8c7b12374" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_f7c54e52-7506-4049-ad88-7fddeab86bb7" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_05ccf5dd-acf6-44be-b3f5-51b8c7b12374" xlink:to="loc_srt_LitigationCaseAxis_f7c54e52-7506-4049-ad88-7fddeab86bb7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_f7c54e52-7506-4049-ad88-7fddeab86bb7_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_f7c54e52-7506-4049-ad88-7fddeab86bb7" xlink:to="loc_srt_LitigationCaseTypeDomain_f7c54e52-7506-4049-ad88-7fddeab86bb7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_6c3ee96c-2b91-45ff-90cc-ce37e4daa00c" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_f7c54e52-7506-4049-ad88-7fddeab86bb7" xlink:to="loc_srt_LitigationCaseTypeDomain_6c3ee96c-2b91-45ff-90cc-ce37e4daa00c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ProductLiabilityMember_8f4970e9-5cd2-42ea-9d0c-f69d6f533bb3" xlink:href="livn-20231231.xsd#livn_ProductLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_6c3ee96c-2b91-45ff-90cc-ce37e4daa00c" xlink:to="loc_livn_ProductLiabilityMember_8f4970e9-5cd2-42ea-9d0c-f69d6f533bb3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_SNIAMember_97d572ea-16c2-42c5-a1a0-49faa60cb0b6" xlink:href="livn-20231231.xsd#livn_SNIAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_6c3ee96c-2b91-45ff-90cc-ce37e4daa00c" xlink:to="loc_livn_SNIAMember_97d572ea-16c2-42c5-a1a0-49faa60cb0b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MitralDemandLetterMember_d1cb4ff9-b9c8-4148-bde7-beb37a18c26f" xlink:href="livn-20231231.xsd#livn_MitralDemandLetterMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_6c3ee96c-2b91-45ff-90cc-ce37e4daa00c" xlink:to="loc_livn_MitralDemandLetterMember_d1cb4ff9-b9c8-4148-bde7-beb37a18c26f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ItalianMedTechPaybackMember_e93e020b-827f-43fc-b314-e91534fda367" xlink:href="livn-20231231.xsd#livn_ItalianMedTechPaybackMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_6c3ee96c-2b91-45ff-90cc-ce37e4daa00c" xlink:to="loc_livn_ItalianMedTechPaybackMember_e93e020b-827f-43fc-b314-e91534fda367" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_419b9cba-a0bf-473c-997d-6afd0c192748" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_05ccf5dd-acf6-44be-b3f5-51b8c7b12374" xlink:to="loc_dei_LegalEntityAxis_419b9cba-a0bf-473c-997d-6afd0c192748" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_419b9cba-a0bf-473c-997d-6afd0c192748_default" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_419b9cba-a0bf-473c-997d-6afd0c192748" xlink:to="loc_dei_EntityDomain_419b9cba-a0bf-473c-997d-6afd0c192748_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_b085b496-1849-4458-9592-17388c60ad68" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_419b9cba-a0bf-473c-997d-6afd0c192748" xlink:to="loc_dei_EntityDomain_b085b496-1849-4458-9592-17388c60ad68" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_SNIAs.p.aMember_caa46ebe-a039-47fe-ae2c-253eda5ee5bb" xlink:href="livn-20231231.xsd#livn_SNIAs.p.aMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_b085b496-1849-4458-9592-17388c60ad68" xlink:to="loc_livn_SNIAs.p.aMember_caa46ebe-a039-47fe-ae2c-253eda5ee5bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusAxis_7477e279-c348-4db2-b32f-514bda5ff2d8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationStatusAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_05ccf5dd-acf6-44be-b3f5-51b8c7b12374" xlink:to="loc_us-gaap_LitigationStatusAxis_7477e279-c348-4db2-b32f-514bda5ff2d8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain_7477e279-c348-4db2-b32f-514bda5ff2d8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LitigationStatusAxis_7477e279-c348-4db2-b32f-514bda5ff2d8" xlink:to="loc_us-gaap_LitigationStatusDomain_7477e279-c348-4db2-b32f-514bda5ff2d8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationStatusDomain_553fdb8e-1902-48a6-9a61-626ad631e0ac" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LitigationStatusDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LitigationStatusAxis_7477e279-c348-4db2-b32f-514bda5ff2d8" xlink:to="loc_us-gaap_LitigationStatusDomain_553fdb8e-1902-48a6-9a61-626ad631e0ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PendingLitigationMember_a0232d2e-15b8-4e89-97e9-be1776f129c4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PendingLitigationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LitigationStatusDomain_553fdb8e-1902-48a6-9a61-626ad631e0ac" xlink:to="loc_us-gaap_PendingLitigationMember_a0232d2e-15b8-4e89-97e9-be1776f129c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_JudicialRulingMember_3258c536-6d27-441a-8238-9b46202163c4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_JudicialRulingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LitigationStatusDomain_553fdb8e-1902-48a6-9a61-626ad631e0ac" xlink:to="loc_us-gaap_JudicialRulingMember_3258c536-6d27-441a-8238-9b46202163c4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_a8958b74-8bed-4e5b-b888-d7983eb1a631" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_05ccf5dd-acf6-44be-b3f5-51b8c7b12374" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_a8958b74-8bed-4e5b-b888-d7983eb1a631" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_a8958b74-8bed-4e5b-b888-d7983eb1a631_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_a8958b74-8bed-4e5b-b888-d7983eb1a631" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_a8958b74-8bed-4e5b-b888-d7983eb1a631_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_4c534531-2d3a-4290-b86a-e74634a1bbf3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_a8958b74-8bed-4e5b-b888-d7983eb1a631" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_4c534531-2d3a-4290-b86a-e74634a1bbf3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_b3b60a83-0e03-4ca7-899c-f17683e8e522" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_4c534531-2d3a-4290-b86a-e74634a1bbf3" xlink:to="loc_us-gaap_SubsequentEventMember_b3b60a83-0e03-4ca7-899c-f17683e8e522" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_4bbaa9a9-0171-47d5-90eb-4a8345f81fa0" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_05ccf5dd-acf6-44be-b3f5-51b8c7b12374" xlink:to="loc_srt_StatementGeographicalAxis_4bbaa9a9-0171-47d5-90eb-4a8345f81fa0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_4bbaa9a9-0171-47d5-90eb-4a8345f81fa0_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_4bbaa9a9-0171-47d5-90eb-4a8345f81fa0" xlink:to="loc_srt_SegmentGeographicalDomain_4bbaa9a9-0171-47d5-90eb-4a8345f81fa0_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_ae16206d-2c09-4f9f-b787-d40e7cc40f13" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_4bbaa9a9-0171-47d5-90eb-4a8345f81fa0" xlink:to="loc_srt_SegmentGeographicalDomain_ae16206d-2c09-4f9f-b787-d40e7cc40f13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_SaluggiaItalyMember_a987bb8a-5584-4c9d-aaf0-0621a06df8bd" xlink:href="livn-20231231.xsd#livn_SaluggiaItalyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_ae16206d-2c09-4f9f-b787-d40e7cc40f13" xlink:to="loc_livn_SaluggiaItalyMember_a987bb8a-5584-4c9d-aaf0-0621a06df8bd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_573ddad6-9252-46a2-81f3-b25eb3dffe55" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_05ccf5dd-acf6-44be-b3f5-51b8c7b12374" xlink:to="loc_srt_RangeAxis_573ddad6-9252-46a2-81f3-b25eb3dffe55" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_573ddad6-9252-46a2-81f3-b25eb3dffe55_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_573ddad6-9252-46a2-81f3-b25eb3dffe55" xlink:to="loc_srt_RangeMember_573ddad6-9252-46a2-81f3-b25eb3dffe55_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_b7d18471-f297-4ce8-b9f2-935b2d8bb8d1" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_573ddad6-9252-46a2-81f3-b25eb3dffe55" xlink:to="loc_srt_RangeMember_b7d18471-f297-4ce8-b9f2-935b2d8bb8d1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_bd435195-64dc-4e2d-9bbe-72605556bc0e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_b7d18471-f297-4ce8-b9f2-935b2d8bb8d1" xlink:to="loc_srt_MinimumMember_bd435195-64dc-4e2d-9bbe-72605556bc0e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_281f900f-49cd-44fe-96ac-540befb76f87" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_b7d18471-f297-4ce8-b9f2-935b2d8bb8d1" xlink:to="loc_srt_MaximumMember_281f900f-49cd-44fe-96ac-540befb76f87" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_711681a4-0ea4-4e5f-8aa4-5ecd2efd9643" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OtherCommitmentsTable_05ccf5dd-acf6-44be-b3f5-51b8c7b12374" xlink:to="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_711681a4-0ea4-4e5f-8aa4-5ecd2efd9643" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_711681a4-0ea4-4e5f-8aa4-5ecd2efd9643_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_711681a4-0ea4-4e5f-8aa4-5ecd2efd9643" xlink:to="loc_us-gaap_LossContingencyNatureDomain_711681a4-0ea4-4e5f-8aa4-5ecd2efd9643_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyNatureDomain_ca02577a-68b6-4d1a-8438-fbb895a546c0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LossContingenciesByNatureOfContingencyAxis_711681a4-0ea4-4e5f-8aa4-5ecd2efd9643" xlink:to="loc_us-gaap_LossContingencyNatureDomain_ca02577a-68b6-4d1a-8438-fbb895a546c0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SuretyBondMember_266c6125-3193-426d-ba5b-a4350b81613c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SuretyBondMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyNatureDomain_ca02577a-68b6-4d1a-8438-fbb895a546c0" xlink:to="loc_us-gaap_SuretyBondMember_266c6125-3193-426d-ba5b-a4350b81613c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_LossContingencyFinancialCapacityToMeetObligationsPeriod_6bb5a95a-f9d2-4e2e-8491-3db8046864c3" xlink:href="livn-20231231.xsd#livn_LossContingencyFinancialCapacityToMeetObligationsPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_livn_LossContingencyFinancialCapacityToMeetObligationsPeriod_6bb5a95a-f9d2-4e2e-8491-3db8046864c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_NumberOfNationalRepositorySites_3ed85588-c849-4b54-b88f-cb2dfa1cd9df" xlink:href="livn-20231231.xsd#livn_NumberOfNationalRepositorySites"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_livn_NumberOfNationalRepositorySites_3ed85588-c849-4b54-b88f-cb2dfa1cd9df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualProvision_363e229e-9002-413b-9673-d62891922b11" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualProvision"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_us-gaap_LossContingencyAccrualProvision_363e229e-9002-413b-9673-d62891922b11" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_21877d1c-b0df-4e45-b4a3-94cfe66d16b6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyEstimateOfPossibleLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_us-gaap_LossContingencyEstimateOfPossibleLoss_21877d1c-b0df-4e45-b4a3-94cfe66d16b6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_LossContingencyAccrualEstimatedProvision_89524d28-e288-4d6c-bd88-11fa69f8c5ad" xlink:href="livn-20231231.xsd#livn_LossContingencyAccrualEstimatedProvision"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_livn_LossContingencyAccrualEstimatedProvision_89524d28-e288-4d6c-bd88-11fa69f8c5ad" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyDamagesSoughtValue_7e543bb9-73c3-4d77-8c10-f6e33f787087" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyDamagesSoughtValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_us-gaap_LossContingencyDamagesSoughtValue_7e543bb9-73c3-4d77-8c10-f6e33f787087" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_BankruptcyClaimsNonPrivilegedCreditorAmount_2403a474-cd8f-4eac-ac56-676573358c25" xlink:href="livn-20231231.xsd#livn_BankruptcyClaimsNonPrivilegedCreditorAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_livn_BankruptcyClaimsNonPrivilegedCreditorAmount_2403a474-cd8f-4eac-ac56-676573358c25" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ReimbursedLegalFees_4587d2e8-1999-49e4-8569-ac3af8990ff5" xlink:href="livn-20231231.xsd#livn_ReimbursedLegalFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_livn_ReimbursedLegalFees_4587d2e8-1999-49e4-8569-ac3af8990ff5" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualPayments_806eeafb-391c-4413-82ca-b3f32ff4729b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_us-gaap_LossContingencyAccrualPayments_806eeafb-391c-4413-82ca-b3f32ff4729b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_LossContingencyPaymentPeriod_9061cd80-0b30-43fe-a1a9-2005b75d9c5c" xlink:href="livn-20231231.xsd#livn_LossContingencyPaymentPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_livn_LossContingencyPaymentPeriod_9061cd80-0b30-43fe-a1a9-2005b75d9c5c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_UtilitiesOperatingExpenseEnvironmentalMaintenance_8dcc22c0-2dbe-4862-a415-7cd9230f1b57" xlink:href="livn-20231231.xsd#livn_UtilitiesOperatingExpenseEnvironmentalMaintenance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_livn_UtilitiesOperatingExpenseEnvironmentalMaintenance_8dcc22c0-2dbe-4862-a415-7cd9230f1b57" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyPendingClaimsNumber_9ac6caa4-3756-4601-8f40-4636efffab57" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyPendingClaimsNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_us-gaap_LossContingencyPendingClaimsNumber_9ac6caa4-3756-4601-8f40-4636efffab57" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_a4397b69-ea61-4045-952b-9b473adff59d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_a4397b69-ea61-4045-952b-9b473adff59d" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_StandardProductWarrantyCapOnClaims_3cff7469-a632-4839-95f3-520975724a86" xlink:href="livn-20231231.xsd#livn_StandardProductWarrantyCapOnClaims"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherCommitmentsLineItems_862518db-2fb2-4d11-8dc6-372992037444" xlink:to="loc_livn_StandardProductWarrantyCapOnClaims_3cff7469-a632-4839-95f3-520975724a86" xlink:type="arc" order="13"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/CommitmentsandContingenciesScheduleofProductLiabilityDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#CommitmentsandContingenciesScheduleofProductLiabilityDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/CommitmentsandContingenciesScheduleofProductLiabilityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesLineItems_0acfaaf7-1bbc-43ac-8238-a01bc84ae500" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingenciesTable_698a515a-e0a9-4e1c-8863-94694e292409" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LossContingenciesLineItems_0acfaaf7-1bbc-43ac-8238-a01bc84ae500" xlink:to="loc_us-gaap_LossContingenciesTable_698a515a-e0a9-4e1c-8863-94694e292409" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_4c8188c2-5375-4476-963c-82f16dc4820e" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LossContingenciesTable_698a515a-e0a9-4e1c-8863-94694e292409" xlink:to="loc_srt_LitigationCaseAxis_4c8188c2-5375-4476-963c-82f16dc4820e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_4c8188c2-5375-4476-963c-82f16dc4820e_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_4c8188c2-5375-4476-963c-82f16dc4820e" xlink:to="loc_srt_LitigationCaseTypeDomain_4c8188c2-5375-4476-963c-82f16dc4820e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_1ebd31b7-5dd2-4577-9f38-cd702443ddd5" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_4c8188c2-5375-4476-963c-82f16dc4820e" xlink:to="loc_srt_LitigationCaseTypeDomain_1ebd31b7-5dd2-4577-9f38-cd702443ddd5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ProductLiabilityMember_1000c3b6-3ea9-4e14-8015-3b8992787054" xlink:href="livn-20231231.xsd#livn_ProductLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_1ebd31b7-5dd2-4577-9f38-cd702443ddd5" xlink:to="loc_livn_ProductLiabilityMember_1000c3b6-3ea9-4e14-8015-3b8992787054" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualRollForward_4bc0e497-14b4-4632-b7b5-22b9689ac3b9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingenciesLineItems_0acfaaf7-1bbc-43ac-8238-a01bc84ae500" xlink:to="loc_us-gaap_LossContingencyAccrualRollForward_4bc0e497-14b4-4632-b7b5-22b9689ac3b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_a79c0046-a57e-4f37-a978-91fe342b2b92" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyAccrualRollForward_4bc0e497-14b4-4632-b7b5-22b9689ac3b9" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_a79c0046-a57e-4f37-a978-91fe342b2b92" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualPayments_6a21f6c5-0ab2-4652-9ec3-a714f467498c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualPayments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyAccrualRollForward_4bc0e497-14b4-4632-b7b5-22b9689ac3b9" xlink:to="loc_us-gaap_LossContingencyAccrualPayments_6a21f6c5-0ab2-4652-9ec3-a714f467498c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_LossContingencyAccrualAdjustments_e57945b8-83a7-4e61-8b56-9695f9ddf5aa" xlink:href="livn-20231231.xsd#livn_LossContingencyAccrualAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyAccrualRollForward_4bc0e497-14b4-4632-b7b5-22b9689ac3b9" xlink:to="loc_livn_LossContingencyAccrualAdjustments_e57945b8-83a7-4e61-8b56-9695f9ddf5aa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_LossContingencyAccrualForeignCurrencyAdjustments_c5cf7b01-ff42-4f71-b9f9-9ac1b87688c7" xlink:href="livn-20231231.xsd#livn_LossContingencyAccrualForeignCurrencyAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyAccrualRollForward_4bc0e497-14b4-4632-b7b5-22b9689ac3b9" xlink:to="loc_livn_LossContingencyAccrualForeignCurrencyAdjustments_c5cf7b01-ff42-4f71-b9f9-9ac1b87688c7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_63bc7da3-c068-438c-9337-dada42549017" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualAtCarryingValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualCarryingValueCurrent_99fd3fbf-098b-47e1-99a8-faa722595e7f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualCarryingValueCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyAccrualRollForward_4bc0e497-14b4-4632-b7b5-22b9689ac3b9" xlink:to="loc_us-gaap_LossContingencyAccrualCarryingValueCurrent_99fd3fbf-098b-47e1-99a8-faa722595e7f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualCarryingValueNoncurrent_c2220e49-cdab-4c29-bf08-4e86a09a6399" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualCarryingValueNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LossContingencyAccrualRollForward_4bc0e497-14b4-4632-b7b5-22b9689ac3b9" xlink:to="loc_us-gaap_LossContingencyAccrualCarryingValueNoncurrent_c2220e49-cdab-4c29-bf08-4e86a09a6399" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/StockholdersEquityNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#StockholdersEquityNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/StockholdersEquityNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ClassOfStockLineItems_696a1d48-75bc-45eb-85b6-d835eb6e30a6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ClassOfStockLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_583c0225-5a80-452a-84d7-b0550e7bf4a7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfStockByClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ClassOfStockLineItems_696a1d48-75bc-45eb-85b6-d835eb6e30a6" xlink:to="loc_us-gaap_ScheduleOfStockByClassTable_583c0225-5a80-452a-84d7-b0550e7bf4a7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_57b0d882-7757-45ab-9e12-e7089cf42db6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_583c0225-5a80-452a-84d7-b0550e7bf4a7" xlink:to="loc_us-gaap_DebtInstrumentAxis_57b0d882-7757-45ab-9e12-e7089cf42db6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_57b0d882-7757-45ab-9e12-e7089cf42db6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_57b0d882-7757-45ab-9e12-e7089cf42db6" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_57b0d882-7757-45ab-9e12-e7089cf42db6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_9f02da10-6c99-412b-ae4b-5537547831fd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_57b0d882-7757-45ab-9e12-e7089cf42db6" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_9f02da10-6c99-412b-ae4b-5537547831fd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SeniorLoansMember_05bf5b76-e741-457a-b58d-966528d8ee2c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SeniorLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_9f02da10-6c99-412b-ae4b-5537547831fd" xlink:to="loc_us-gaap_SeniorLoansMember_05bf5b76-e741-457a-b58d-966528d8ee2c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesIssued_01955496-3323-4fe0-98b9-480ee36464c3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockSharesIssued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_696a1d48-75bc-45eb-85b6-d835eb6e30a6" xlink:to="loc_us-gaap_CommonStockSharesIssued_01955496-3323-4fe0-98b9-480ee36464c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_86a42c58-6bdb-48e5-8163-0d7cdc204b65" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_696a1d48-75bc-45eb-85b6-d835eb6e30a6" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_86a42c58-6bdb-48e5-8163-0d7cdc204b65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharesIssuedPricePerShare_8d78ec85-5ee6-4a8c-9e7f-8f915688f766" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharesIssuedPricePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_696a1d48-75bc-45eb-85b6-d835eb6e30a6" xlink:to="loc_us-gaap_SharesIssuedPricePerShare_8d78ec85-5ee6-4a8c-9e7f-8f915688f766" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_4c8ad3c8-48ec-4ce9-ab3d-464dbf1d4045" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_696a1d48-75bc-45eb-85b6-d835eb6e30a6" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_4c8ad3c8-48ec-4ce9-ab3d-464dbf1d4045" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_12530dc2-bf4e-42e7-a864-5a7eaed865e1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ClassOfStockLineItems_696a1d48-75bc-45eb-85b6-d835eb6e30a6" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_12530dc2-bf4e-42e7-a864-5a7eaed865e1" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/StockholdersEquityChangesinAccumulatedOtherComprehensiveIncomeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#StockholdersEquityChangesinAccumulatedOtherComprehensiveIncomeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/StockholdersEquityChangesinAccumulatedOtherComprehensiveIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_eeaa0bb7-855f-4e01-b3f5-bd63306b2fb7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_c89c0b9c-c29a-4df8-b859-20ecde59ce7c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_eeaa0bb7-855f-4e01-b3f5-bd63306b2fb7" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_c89c0b9c-c29a-4df8-b859-20ecde59ce7c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_334c1706-a193-40b1-880d-015e5fc36045" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_c89c0b9c-c29a-4df8-b859-20ecde59ce7c" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_334c1706-a193-40b1-880d-015e5fc36045" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_334c1706-a193-40b1-880d-015e5fc36045_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_334c1706-a193-40b1-880d-015e5fc36045" xlink:to="loc_us-gaap_EquityComponentDomain_334c1706-a193-40b1-880d-015e5fc36045_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_7bcb828b-21e9-4443-936b-913b72f771f7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_334c1706-a193-40b1-880d-015e5fc36045" xlink:to="loc_us-gaap_EquityComponentDomain_7bcb828b-21e9-4443-936b-913b72f771f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_60d2bd5a-e7fc-4129-87dd-d31120025c5a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_7bcb828b-21e9-4443-936b-913b72f771f7" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_60d2bd5a-e7fc-4129-87dd-d31120025c5a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_4e8b575e-55ee-4fc3-a3fc-4911e2c308b1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_60d2bd5a-e7fc-4129-87dd-d31120025c5a" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_4e8b575e-55ee-4fc3-a3fc-4911e2c308b1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_f7cb737b-8851-4354-bce6-c56e321cdb89" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_60d2bd5a-e7fc-4129-87dd-d31120025c5a" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_f7cb737b-8851-4354-bce6-c56e321cdb89" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_77b0e252-2453-4658-bc5d-c1d4cbe60958" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_eeaa0bb7-855f-4e01-b3f5-bd63306b2fb7" xlink:to="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_77b0e252-2453-4658-bc5d-c1d4cbe60958" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_41bfbf9b-95a6-46ad-bd60-218b027a0539" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_77b0e252-2453-4658-bc5d-c1d4cbe60958" xlink:to="loc_us-gaap_StockholdersEquity_41bfbf9b-95a6-46ad-bd60-218b027a0539" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_440dd998-d7fb-4025-af81-d0b055753f3d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_77b0e252-2453-4658-bc5d-c1d4cbe60958" xlink:to="loc_us-gaap_OciBeforeReclassificationsBeforeTaxAttributableToParent_440dd998-d7fb-4025-af81-d0b055753f3d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_13f57872-03ce-411d-8664-723dbeac7e07" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_77b0e252-2453-4658-bc5d-c1d4cbe60958" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsTax_13f57872-03ce-411d-8664-723dbeac7e07" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_27a12717-e6a9-48bf-9333-74a29ac7c833" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_77b0e252-2453-4658-bc5d-c1d4cbe60958" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_27a12717-e6a9-48bf-9333-74a29ac7c833" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_6c273bd0-4233-45e3-a0cf-821b670e52a0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_77b0e252-2453-4658-bc5d-c1d4cbe60958" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodBeforeTaxAttributableToParent_6c273bd0-4233-45e3-a0cf-821b670e52a0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_bacc56d6-e144-46e9-ad92-febdc9bc2a49" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_77b0e252-2453-4658-bc5d-c1d4cbe60958" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodTax_bacc56d6-e144-46e9-ad92-febdc9bc2a49" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_b6d6ac40-b9df-4d84-ad0c-6e2f6c9c8e15" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_77b0e252-2453-4658-bc5d-c1d4cbe60958" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_b6d6ac40-b9df-4d84-ad0c-6e2f6c9c8e15" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_d070db87-7674-4a65-a968-d1044d635b90" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AOCIAttributableToParentNetOfTaxRollForward_77b0e252-2453-4658-bc5d-c1d4cbe60958" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_d070db87-7674-4a65-a968-d1044d635b90" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_6515656e-a29c-41f6-aef2-131c1a23b4f6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#StockBasedIncentivePlansNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_dafd79a2-f18c-4087-b507-94bdad50eb02" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3d851f49-ffbd-459b-9b91-3d7dc8e10c68" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_dafd79a2-f18c-4087-b507-94bdad50eb02" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3d851f49-ffbd-459b-9b91-3d7dc8e10c68" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_cc7bce46-8175-42ff-93e4-c4574112aa48" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3d851f49-ffbd-459b-9b91-3d7dc8e10c68" xlink:to="loc_us-gaap_AwardTypeAxis_cc7bce46-8175-42ff-93e4-c4574112aa48" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cc7bce46-8175-42ff-93e4-c4574112aa48_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_cc7bce46-8175-42ff-93e4-c4574112aa48" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cc7bce46-8175-42ff-93e4-c4574112aa48_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cd21d514-7744-4b04-a3bc-8ae38477012c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_cc7bce46-8175-42ff-93e4-c4574112aa48" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cd21d514-7744-4b04-a3bc-8ae38477012c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_b284fa26-0dad-4d72-8bf0-92ab6d306f7c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cd21d514-7744-4b04-a3bc-8ae38477012c" xlink:to="loc_us-gaap_EmployeeStockMember_b284fa26-0dad-4d72-8bf0-92ab6d306f7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MarketbasedPerformanceRestrictedStockUnitsMember_72ee7a68-c8ea-4346-83e5-4cf235c511bc" xlink:href="livn-20231231.xsd#livn_MarketbasedPerformanceRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cd21d514-7744-4b04-a3bc-8ae38477012c" xlink:to="loc_livn_MarketbasedPerformanceRestrictedStockUnitsMember_72ee7a68-c8ea-4346-83e5-4cf235c511bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_ab10eef7-a566-4023-a140-53c5c2617a31" xlink:href="livn-20231231.xsd#livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cd21d514-7744-4b04-a3bc-8ae38477012c" xlink:to="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_ab10eef7-a566-4023-a140-53c5c2617a31" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockOptionMember_14e91c2c-67d5-455e-938d-1d410878b0ae" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockOptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cd21d514-7744-4b04-a3bc-8ae38477012c" xlink:to="loc_us-gaap_EmployeeStockOptionMember_14e91c2c-67d5-455e-938d-1d410878b0ae" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_OtherThanOptionAwardsMember_7e57e56b-74ad-417f-a1b3-05fd13d93395" xlink:href="livn-20231231.xsd#livn_OtherThanOptionAwardsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_cd21d514-7744-4b04-a3bc-8ae38477012c" xlink:to="loc_livn_OtherThanOptionAwardsMember_7e57e56b-74ad-417f-a1b3-05fd13d93395" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_44e55b1d-0515-463a-894c-221d6ae8595b" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3d851f49-ffbd-459b-9b91-3d7dc8e10c68" xlink:to="loc_srt_RangeAxis_44e55b1d-0515-463a-894c-221d6ae8595b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_44e55b1d-0515-463a-894c-221d6ae8595b_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_44e55b1d-0515-463a-894c-221d6ae8595b" xlink:to="loc_srt_RangeMember_44e55b1d-0515-463a-894c-221d6ae8595b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_6ee4a849-28a1-415e-98ac-9abb75ad0029" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_44e55b1d-0515-463a-894c-221d6ae8595b" xlink:to="loc_srt_RangeMember_6ee4a849-28a1-415e-98ac-9abb75ad0029" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_176fb194-0397-4dba-8f80-636d7eb9e3f0" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6ee4a849-28a1-415e-98ac-9abb75ad0029" xlink:to="loc_srt_MinimumMember_176fb194-0397-4dba-8f80-636d7eb9e3f0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_a3c7afcf-5b7b-4c9f-a8fd-06c04dc52c9b" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_6ee4a849-28a1-415e-98ac-9abb75ad0029" xlink:to="loc_srt_MaximumMember_a3c7afcf-5b7b-4c9f-a8fd-06c04dc52c9b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_d4fc8eef-5f18-42f2-a7a6-8722c82146cc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_3d851f49-ffbd-459b-9b91-3d7dc8e10c68" xlink:to="loc_us-gaap_PlanNameAxis_d4fc8eef-5f18-42f2-a7a6-8722c82146cc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_d4fc8eef-5f18-42f2-a7a6-8722c82146cc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_d4fc8eef-5f18-42f2-a7a6-8722c82146cc" xlink:to="loc_us-gaap_PlanNameDomain_d4fc8eef-5f18-42f2-a7a6-8722c82146cc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_76d12fce-f2f5-4cbb-8b27-75bbbbee3e5f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_d4fc8eef-5f18-42f2-a7a6-8722c82146cc" xlink:to="loc_us-gaap_PlanNameDomain_76d12fce-f2f5-4cbb-8b27-75bbbbee3e5f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_A2022IncentiveAwardPlanMember_b4c848cd-40b4-4453-9622-58162045faf0" xlink:href="livn-20231231.xsd#livn_A2022IncentiveAwardPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_76d12fce-f2f5-4cbb-8b27-75bbbbee3e5f" xlink:to="loc_livn_A2022IncentiveAwardPlanMember_b4c848cd-40b4-4453-9622-58162045faf0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_AR2022PlanMember_43367c00-f37e-4f08-9e99-ae6d70d1510d" xlink:href="livn-20231231.xsd#livn_AR2022PlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_76d12fce-f2f5-4cbb-8b27-75bbbbee3e5f" xlink:to="loc_livn_AR2022PlanMember_43367c00-f37e-4f08-9e99-ae6d70d1510d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_7be6105a-86dc-4e08-a310-2fa24d12c0f2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_dafd79a2-f18c-4087-b507-94bdad50eb02" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_7be6105a-86dc-4e08-a310-2fa24d12c0f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_5ee7f77e-811c-4e57-829e-451248ce179f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_dafd79a2-f18c-4087-b507-94bdad50eb02" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_5ee7f77e-811c-4e57-829e-451248ce179f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_15b7036a-d833-411c-8d67-4de0ea85d537" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_dafd79a2-f18c-4087-b507-94bdad50eb02" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_15b7036a-d833-411c-8d67-4de0ea85d537" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansAllocationofShareBasedCompensationCostsbyExpenseCategoryDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#StockBasedIncentivePlansAllocationofShareBasedCompensationCostsbyExpenseCategoryDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansAllocationofShareBasedCompensationCostsbyExpenseCategoryDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_aade5e19-e7fd-485e-94b6-3d9cee924f3c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_6aa93d5e-9e91-4d35-91b9-324c007d523f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_aade5e19-e7fd-485e-94b6-3d9cee924f3c" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_6aa93d5e-9e91-4d35-91b9-324c007d523f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_042e2c4c-a1ee-4045-8e20-e30cb963652e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_6aa93d5e-9e91-4d35-91b9-324c007d523f" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_042e2c4c-a1ee-4045-8e20-e30cb963652e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_042e2c4c-a1ee-4045-8e20-e30cb963652e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_042e2c4c-a1ee-4045-8e20-e30cb963652e" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_042e2c4c-a1ee-4045-8e20-e30cb963652e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_9ca2bc18-9db1-45dc-a665-ac4194279a9e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_042e2c4c-a1ee-4045-8e20-e30cb963652e" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_9ca2bc18-9db1-45dc-a665-ac4194279a9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_c260083a-6431-4257-a060-0d1a137aafd6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_9ca2bc18-9db1-45dc-a665-ac4194279a9e" xlink:to="loc_us-gaap_CostOfSalesMember_c260083a-6431-4257-a060-0d1a137aafd6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpensesMember_6a1f4370-8d1f-4105-ad0f-9f3a7d356468" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SellingGeneralAndAdministrativeExpensesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_9ca2bc18-9db1-45dc-a665-ac4194279a9e" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpensesMember_6a1f4370-8d1f-4105-ad0f-9f3a7d356468" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_925880ab-2df4-45bc-a30d-6f54137ee933" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ResearchAndDevelopmentExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_9ca2bc18-9db1-45dc-a665-ac4194279a9e" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_925880ab-2df4-45bc-a30d-6f54137ee933" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_78aacfb1-de5c-4d70-8e7c-667b8f678304" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_aade5e19-e7fd-485e-94b6-3d9cee924f3c" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_78aacfb1-de5c-4d70-8e7c-667b8f678304" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_31431aa4-009a-47c2-9627-c0140d9afea6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_aade5e19-e7fd-485e-94b6-3d9cee924f3c" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_31431aa4-009a-47c2-9627-c0140d9afea6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_e719817d-d9d9-465b-a78f-95a595ffe57f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_aade5e19-e7fd-485e-94b6-3d9cee924f3c" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_e719817d-d9d9-465b-a78f-95a595ffe57f" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansAllocationofShareBasedCompensationCostsbyTypeofArrangementDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#StockBasedIncentivePlansAllocationofShareBasedCompensationCostsbyTypeofArrangementDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansAllocationofShareBasedCompensationCostsbyTypeofArrangementDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d39986eb-880c-4cd1-8634-4b51aa95ab5c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_eafcf30c-7f6b-4cda-bf46-b40409fb3d17" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d39986eb-880c-4cd1-8634-4b51aa95ab5c" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_eafcf30c-7f6b-4cda-bf46-b40409fb3d17" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_c10661de-cedd-4bdb-a1ed-068655ab4b82" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_eafcf30c-7f6b-4cda-bf46-b40409fb3d17" xlink:to="loc_us-gaap_AwardTypeAxis_c10661de-cedd-4bdb-a1ed-068655ab4b82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c10661de-cedd-4bdb-a1ed-068655ab4b82_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_c10661de-cedd-4bdb-a1ed-068655ab4b82" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_c10661de-cedd-4bdb-a1ed-068655ab4b82_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2cc0ee2b-b653-48d0-93c8-d91b8bb70d34" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_c10661de-cedd-4bdb-a1ed-068655ab4b82" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2cc0ee2b-b653-48d0-93c8-d91b8bb70d34" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ServiceBasedRestrictedStockUnitsMember_9dd4ed37-9220-46c5-8617-f2902e061e03" xlink:href="livn-20231231.xsd#livn_ServiceBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2cc0ee2b-b653-48d0-93c8-d91b8bb70d34" xlink:to="loc_livn_ServiceBasedRestrictedStockUnitsMember_9dd4ed37-9220-46c5-8617-f2902e061e03" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ServiceBasedStockAppreciationRightsMember_694408b3-fe85-4016-81a8-813b4d9d4c54" xlink:href="livn-20231231.xsd#livn_ServiceBasedStockAppreciationRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2cc0ee2b-b653-48d0-93c8-d91b8bb70d34" xlink:to="loc_livn_ServiceBasedStockAppreciationRightsMember_694408b3-fe85-4016-81a8-813b4d9d4c54" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MarketbasedPerformanceRestrictedStockUnitsMember_ed76d3bc-e133-45d3-b706-3019c8c72311" xlink:href="livn-20231231.xsd#livn_MarketbasedPerformanceRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2cc0ee2b-b653-48d0-93c8-d91b8bb70d34" xlink:to="loc_livn_MarketbasedPerformanceRestrictedStockUnitsMember_ed76d3bc-e133-45d3-b706-3019c8c72311" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_61b98ea1-e122-4112-beb9-6c8da513bb91" xlink:href="livn-20231231.xsd#livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2cc0ee2b-b653-48d0-93c8-d91b8bb70d34" xlink:to="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_61b98ea1-e122-4112-beb9-6c8da513bb91" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember_b8974834-7fb4-4a5e-b3c3-936ecf3bcbb3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_2cc0ee2b-b653-48d0-93c8-d91b8bb70d34" xlink:to="loc_us-gaap_EmployeeStockMember_b8974834-7fb4-4a5e-b3c3-936ecf3bcbb3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_4016eefd-edfa-438a-b2b4-ff2f8df7086d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_d39986eb-880c-4cd1-8634-4b51aa95ab5c" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_4016eefd-edfa-438a-b2b4-ff2f8df7086d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansScheduleofStockBasedCompensationCostUnrecognizedDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#StockBasedIncentivePlansScheduleofStockBasedCompensationCostUnrecognizedDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansScheduleofStockBasedCompensationCostUnrecognizedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f309a1ee-eeb3-42a4-8cb2-88603afde137" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a57b2c51-cb14-4f05-b300-831da5900def" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f309a1ee-eeb3-42a4-8cb2-88603afde137" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a57b2c51-cb14-4f05-b300-831da5900def" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_a1440849-e4b6-48ae-999c-905a617cd58b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a57b2c51-cb14-4f05-b300-831da5900def" xlink:to="loc_us-gaap_AwardTypeAxis_a1440849-e4b6-48ae-999c-905a617cd58b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_a1440849-e4b6-48ae-999c-905a617cd58b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_a1440849-e4b6-48ae-999c-905a617cd58b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_a1440849-e4b6-48ae-999c-905a617cd58b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7913f6e4-40ab-4c16-9c80-7243ccfc289b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_a1440849-e4b6-48ae-999c-905a617cd58b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7913f6e4-40ab-4c16-9c80-7243ccfc289b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ServiceBasedStockAppreciationRightsMember_fb5411b7-a888-41f7-ab6b-664de52c9fa2" xlink:href="livn-20231231.xsd#livn_ServiceBasedStockAppreciationRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7913f6e4-40ab-4c16-9c80-7243ccfc289b" xlink:to="loc_livn_ServiceBasedStockAppreciationRightsMember_fb5411b7-a888-41f7-ab6b-664de52c9fa2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ServiceBasedRestrictedStockUnitsMember_c1667216-1c91-4a88-b292-8f3e3a231eae" xlink:href="livn-20231231.xsd#livn_ServiceBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7913f6e4-40ab-4c16-9c80-7243ccfc289b" xlink:to="loc_livn_ServiceBasedRestrictedStockUnitsMember_c1667216-1c91-4a88-b292-8f3e3a231eae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_0dbae074-923b-48bd-86a7-6b0a64390111" xlink:href="livn-20231231.xsd#livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7913f6e4-40ab-4c16-9c80-7243ccfc289b" xlink:to="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_0dbae074-923b-48bd-86a7-6b0a64390111" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_1d66d947-0aa9-40e4-ae34-1241c19a8999" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f309a1ee-eeb3-42a4-8cb2-88603afde137" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_1d66d947-0aa9-40e4-ae34-1241c19a8999" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_6223a44e-9c39-4539-a6fb-44fceeb6a0b1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f309a1ee-eeb3-42a4-8cb2-88603afde137" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_6223a44e-9c39-4539-a6fb-44fceeb6a0b1" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansScheduleofRestrictedStockServiceBasedRollforwardDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#StockBasedIncentivePlansScheduleofRestrictedStockServiceBasedRollforwardDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansScheduleofRestrictedStockServiceBasedRollforwardDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b9074bed-1328-4df7-a8d6-3ad9e3e40c1b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_caa47ee0-629e-452f-bb0a-2e4530f072bc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b9074bed-1328-4df7-a8d6-3ad9e3e40c1b" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_caa47ee0-629e-452f-bb0a-2e4530f072bc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_08c1b990-f8e6-4c4e-b87c-84bd22ddc412" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_caa47ee0-629e-452f-bb0a-2e4530f072bc" xlink:to="loc_us-gaap_AwardTypeAxis_08c1b990-f8e6-4c4e-b87c-84bd22ddc412" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_08c1b990-f8e6-4c4e-b87c-84bd22ddc412_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_08c1b990-f8e6-4c4e-b87c-84bd22ddc412" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_08c1b990-f8e6-4c4e-b87c-84bd22ddc412_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_389d608b-b37a-4c02-ab97-436a78ec5605" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_08c1b990-f8e6-4c4e-b87c-84bd22ddc412" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_389d608b-b37a-4c02-ab97-436a78ec5605" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ServiceBasedRestrictedStockUnitsMember_9cb74f0f-0d86-4c1b-9702-bc87264646a8" xlink:href="livn-20231231.xsd#livn_ServiceBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_389d608b-b37a-4c02-ab97-436a78ec5605" xlink:to="loc_livn_ServiceBasedRestrictedStockUnitsMember_9cb74f0f-0d86-4c1b-9702-bc87264646a8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_28fb8680-c7f0-44b5-a175-3d8a66b85fa5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b9074bed-1328-4df7-a8d6-3ad9e3e40c1b" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_28fb8680-c7f0-44b5-a175-3d8a66b85fa5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_8b7aaa29-64d6-4273-bd2a-0042844d5269" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_28fb8680-c7f0-44b5-a175-3d8a66b85fa5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_8b7aaa29-64d6-4273-bd2a-0042844d5269" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_4d0884fc-cda6-4568-8a90-03516ddb00a6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_28fb8680-c7f0-44b5-a175-3d8a66b85fa5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_4d0884fc-cda6-4568-8a90-03516ddb00a6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_67eeec49-79ac-430f-b6cf-83ba9c9d5013" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_28fb8680-c7f0-44b5-a175-3d8a66b85fa5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_67eeec49-79ac-430f-b6cf-83ba9c9d5013" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_115f8ece-3274-4f39-a511-e8a3952560e3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_28fb8680-c7f0-44b5-a175-3d8a66b85fa5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_115f8ece-3274-4f39-a511-e8a3952560e3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_e3356dff-41c3-444e-8390-63d7bb816e8b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cef7bf6b-39ec-4068-97db-a290004b5522" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b9074bed-1328-4df7-a8d6-3ad9e3e40c1b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cef7bf6b-39ec-4068-97db-a290004b5522" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0ecaa7f8-8559-436e-87cf-cd84990c55e0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cef7bf6b-39ec-4068-97db-a290004b5522" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0ecaa7f8-8559-436e-87cf-cd84990c55e0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_8e8dc212-236e-40f1-bbc8-655daf9fec9a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cef7bf6b-39ec-4068-97db-a290004b5522" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_8e8dc212-236e-40f1-bbc8-655daf9fec9a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_d9af3ccf-c24b-42ca-b674-394f1aad3239" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cef7bf6b-39ec-4068-97db-a290004b5522" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_d9af3ccf-c24b-42ca-b674-394f1aad3239" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_ad407fef-1c8d-4fb7-88f6-4248db2cadf6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cef7bf6b-39ec-4068-97db-a290004b5522" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_ad407fef-1c8d-4fb7-88f6-4248db2cadf6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_742170e2-149e-4d9a-ac95-d304c3136ed8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansSummaryofRestrictedStockServiceBasedActivityDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#StockBasedIncentivePlansSummaryofRestrictedStockServiceBasedActivityDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansSummaryofRestrictedStockServiceBasedActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b162a64a-11a2-45e9-b6a7-3ff9d1bb2e1d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a7bfbdbd-8784-4ed0-b635-818224b2f956" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b162a64a-11a2-45e9-b6a7-3ff9d1bb2e1d" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a7bfbdbd-8784-4ed0-b635-818224b2f956" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_5dbcd3d4-ecb6-4cdd-ad1b-61a5c550d165" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_a7bfbdbd-8784-4ed0-b635-818224b2f956" xlink:to="loc_us-gaap_AwardTypeAxis_5dbcd3d4-ecb6-4cdd-ad1b-61a5c550d165" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5dbcd3d4-ecb6-4cdd-ad1b-61a5c550d165_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_5dbcd3d4-ecb6-4cdd-ad1b-61a5c550d165" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5dbcd3d4-ecb6-4cdd-ad1b-61a5c550d165_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0566288e-5a7c-4cdc-9535-c90a163070a3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_5dbcd3d4-ecb6-4cdd-ad1b-61a5c550d165" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0566288e-5a7c-4cdc-9535-c90a163070a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ServiceBasedRestrictedStockUnitsMember_6d33120c-859c-4db6-b4d3-b5f54e7cf4a6" xlink:href="livn-20231231.xsd#livn_ServiceBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0566288e-5a7c-4cdc-9535-c90a163070a3" xlink:to="loc_livn_ServiceBasedRestrictedStockUnitsMember_6d33120c-859c-4db6-b4d3-b5f54e7cf4a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_54b7d610-29bc-43f8-81ec-d68f63d71dda" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b162a64a-11a2-45e9-b6a7-3ff9d1bb2e1d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_54b7d610-29bc-43f8-81ec-d68f63d71dda" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_cc93d51e-0ba0-45c8-a0a6-340c9267a304" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_b162a64a-11a2-45e9-b6a7-3ff9d1bb2e1d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_cc93d51e-0ba0-45c8-a0a6-340c9267a304" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansScheduleofPerformanceBasedRestrictedStockandRestrictedStockUnitsRollforwardDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#StockBasedIncentivePlansScheduleofPerformanceBasedRestrictedStockandRestrictedStockUnitsRollforwardDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansScheduleofPerformanceBasedRestrictedStockandRestrictedStockUnitsRollforwardDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f549989d-6f8f-43c3-a877-55522389411a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ca7ea1ba-128c-4db2-b676-d02f8186dc57" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f549989d-6f8f-43c3-a877-55522389411a" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ca7ea1ba-128c-4db2-b676-d02f8186dc57" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_7f37b863-8df1-43a1-bc1a-7f70c3c1af06" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_ca7ea1ba-128c-4db2-b676-d02f8186dc57" xlink:to="loc_us-gaap_AwardTypeAxis_7f37b863-8df1-43a1-bc1a-7f70c3c1af06" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7f37b863-8df1-43a1-bc1a-7f70c3c1af06_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_7f37b863-8df1-43a1-bc1a-7f70c3c1af06" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_7f37b863-8df1-43a1-bc1a-7f70c3c1af06_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_47a1b42b-43d3-478b-b062-21a3382821fe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_7f37b863-8df1-43a1-bc1a-7f70c3c1af06" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_47a1b42b-43d3-478b-b062-21a3382821fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_74eaae47-1fbb-4fcb-9d95-3b2f81c29d2f" xlink:href="livn-20231231.xsd#livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_47a1b42b-43d3-478b-b062-21a3382821fe" xlink:to="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_74eaae47-1fbb-4fcb-9d95-3b2f81c29d2f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_5f078a77-6b28-4103-bad4-19ea0f0cb6b6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f549989d-6f8f-43c3-a877-55522389411a" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_5f078a77-6b28-4103-bad4-19ea0f0cb6b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_dc3ba882-0458-4b7c-ac87-ccf5a7dc9215" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_5f078a77-6b28-4103-bad4-19ea0f0cb6b6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_dc3ba882-0458-4b7c-ac87-ccf5a7dc9215" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_f7f1f4f2-2b2f-4765-96d5-85686ba1746b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_5f078a77-6b28-4103-bad4-19ea0f0cb6b6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_f7f1f4f2-2b2f-4765-96d5-85686ba1746b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_7d5cda76-eeac-4d8c-96cc-dff0e29a3758" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_5f078a77-6b28-4103-bad4-19ea0f0cb6b6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_7d5cda76-eeac-4d8c-96cc-dff0e29a3758" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_321e9c34-cd01-4121-acff-d52c99f80913" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_5f078a77-6b28-4103-bad4-19ea0f0cb6b6" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_321e9c34-cd01-4121-acff-d52c99f80913" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustments_0d711737-dd9f-411d-8ecd-1138a1589988" xlink:href="livn-20231231.xsd#livn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward_5f078a77-6b28-4103-bad4-19ea0f0cb6b6" xlink:to="loc_livn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustments_0d711737-dd9f-411d-8ecd-1138a1589988" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_a07c58ac-c2ee-4418-a080-bd3eb36ffcea" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cbc24aee-b15e-49f1-bd52-9d04ad6fd48f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_f549989d-6f8f-43c3-a877-55522389411a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cbc24aee-b15e-49f1-bd52-9d04ad6fd48f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_e04e9e2e-70eb-4545-b59d-0aff174c1692" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cbc24aee-b15e-49f1-bd52-9d04ad6fd48f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_e04e9e2e-70eb-4545-b59d-0aff174c1692" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2c27fb8a-dbde-4991-a7bb-01eadd1940be" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cbc24aee-b15e-49f1-bd52-9d04ad6fd48f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_2c27fb8a-dbde-4991-a7bb-01eadd1940be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_b329bde5-8b99-4ec6-800d-c574e5420e2b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cbc24aee-b15e-49f1-bd52-9d04ad6fd48f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_b329bde5-8b99-4ec6-800d-c574e5420e2b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_ebd6c874-dcb0-4b96-a9e0-8a226af1d3e1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cbc24aee-b15e-49f1-bd52-9d04ad6fd48f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_ebd6c874-dcb0-4b96-a9e0-8a226af1d3e1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsWeightedAverageGrantDateFairValue_285919a4-35ea-4da1-aed8-5b3ceb82d85d" xlink:href="livn-20231231.xsd#livn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_cbc24aee-b15e-49f1-bd52-9d04ad6fd48f" xlink:to="loc_livn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsWeightedAverageGrantDateFairValue_285919a4-35ea-4da1-aed8-5b3ceb82d85d" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_069bf2b1-8726-44dc-b163-282d8fa2f162" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansSummaryofPerformanceBasedRestrictedStockandRestrictedStockUnitActivityDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#StockBasedIncentivePlansSummaryofPerformanceBasedRestrictedStockandRestrictedStockUnitActivityDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/StockBasedIncentivePlansSummaryofPerformanceBasedRestrictedStockandRestrictedStockUnitActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_35f57f77-af54-4945-9264-72ccff70b404" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8e3537ce-8d69-4545-a2be-530c6d49e4cc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_35f57f77-af54-4945-9264-72ccff70b404" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8e3537ce-8d69-4545-a2be-530c6d49e4cc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_a3e0cfc8-b167-445a-b420-848ef8daef30" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_8e3537ce-8d69-4545-a2be-530c6d49e4cc" xlink:to="loc_us-gaap_AwardTypeAxis_a3e0cfc8-b167-445a-b420-848ef8daef30" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_a3e0cfc8-b167-445a-b420-848ef8daef30_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_a3e0cfc8-b167-445a-b420-848ef8daef30" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_a3e0cfc8-b167-445a-b420-848ef8daef30_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_afde0813-50a9-41da-a3cf-bf3ad42ed28d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_a3e0cfc8-b167-445a-b420-848ef8daef30" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_afde0813-50a9-41da-a3cf-bf3ad42ed28d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_b5224bfe-2d04-4fe8-a90e-f7d8754685c0" xlink:href="livn-20231231.xsd#livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_afde0813-50a9-41da-a3cf-bf3ad42ed28d" xlink:to="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_b5224bfe-2d04-4fe8-a90e-f7d8754685c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_caf4b3a9-5f6a-4c7a-98aa-4d735ae0fd49" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_35f57f77-af54-4945-9264-72ccff70b404" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_caf4b3a9-5f6a-4c7a-98aa-4d735ae0fd49" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_11296545-d3bf-4b55-9bf6-27da11eb42e4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_35f57f77-af54-4945-9264-72ccff70b404" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_11296545-d3bf-4b55-9bf6-27da11eb42e4" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansChangeinBenefitObligationsandFundedStatusDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#EmployeeRetirementPlansChangeinBenefitObligationsandFundedStatusDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansChangeinBenefitObligationsandFundedStatusDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9880d433-b79d-4f4e-8b3a-77841ed77005" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ed506c6c-13be-4a5d-9f46-4ec0a5b1282a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9880d433-b79d-4f4e-8b3a-77841ed77005" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ed506c6c-13be-4a5d-9f46-4ec0a5b1282a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_fdf9f46d-7413-497a-b417-d7cb52f1244b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ed506c6c-13be-4a5d-9f46-4ec0a5b1282a" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_fdf9f46d-7413-497a-b417-d7cb52f1244b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_fdf9f46d-7413-497a-b417-d7cb52f1244b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_fdf9f46d-7413-497a-b417-d7cb52f1244b" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_fdf9f46d-7413-497a-b417-d7cb52f1244b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_0067e03b-1cf8-4928-a7fb-21f0f7ff4cf3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_fdf9f46d-7413-497a-b417-d7cb52f1244b" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_0067e03b-1cf8-4928-a7fb-21f0f7ff4cf3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_f47d41b4-6b1f-4a41-8e3e-67ccb54a69c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_0067e03b-1cf8-4928-a7fb-21f0f7ff4cf3" xlink:to="loc_us-gaap_DomesticPlanMember_f47d41b4-6b1f-4a41-8e3e-67ccb54a69c8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_1ca0683e-33c0-4f6a-93b9-8a1c208709a1" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_f47d41b4-6b1f-4a41-8e3e-67ccb54a69c8" xlink:to="loc_country_US_1ca0683e-33c0-4f6a-93b9-8a1c208709a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_fb2f66f4-92ce-4850-8f6e-6f9e5037202f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_0067e03b-1cf8-4928-a7fb-21f0f7ff4cf3" xlink:to="loc_us-gaap_ForeignPlanMember_fb2f66f4-92ce-4850-8f6e-6f9e5037202f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_c2dd083f-2327-4458-9d34-859335766838" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_ed506c6c-13be-4a5d-9f46-4ec0a5b1282a" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_c2dd083f-2327-4458-9d34-859335766838" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_c2dd083f-2327-4458-9d34-859335766838_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c2dd083f-2327-4458-9d34-859335766838" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_c2dd083f-2327-4458-9d34-859335766838_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_b8e76225-4f10-4f97-9d76-d82e25b9be8a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_c2dd083f-2327-4458-9d34-859335766838" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_b8e76225-4f10-4f97-9d76-d82e25b9be8a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_d40ce15e-5c25-4968-8c5a-65ee5542274c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_b8e76225-4f10-4f97-9d76-d82e25b9be8a" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_d40ce15e-5c25-4968-8c5a-65ee5542274c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_7ec91569-c631-4692-9227-09fa14cb93bb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9880d433-b79d-4f4e-8b3a-77841ed77005" xlink:to="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_7ec91569-c631-4692-9227-09fa14cb93bb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_c13777f8-3b5d-4fe8-9970-14e6753c8406" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9880d433-b79d-4f4e-8b3a-77841ed77005" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_c13777f8-3b5d-4fe8-9970-14e6753c8406" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_ba517d11-e2d3-4291-bbe3-323bd5864187" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_c13777f8-3b5d-4fe8-9970-14e6753c8406" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligation_ba517d11-e2d3-4291-bbe3-323bd5864187" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_750926f2-fa44-4e53-909f-18d5ce7607dd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_c13777f8-3b5d-4fe8-9970-14e6753c8406" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_750926f2-fa44-4e53-909f-18d5ce7607dd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement_c8f58712-8703-46ce-ba1e-0862c6fc7f64" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_c13777f8-3b5d-4fe8-9970-14e6753c8406" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement_c8f58712-8703-46ce-ba1e-0862c6fc7f64" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_da2ec876-d8d7-42ae-b366-24164de9d0eb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_c13777f8-3b5d-4fe8-9970-14e6753c8406" xlink:to="loc_us-gaap_DefinedBenefitPlanActuarialGainLoss_da2ec876-d8d7-42ae-b366-24164de9d0eb" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_d5e029b0-2167-4e89-988d-bb478bccf14b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_c13777f8-3b5d-4fe8-9970-14e6753c8406" xlink:to="loc_us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid_d5e029b0-2167-4e89-988d-bb478bccf14b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_3ccdaae0-73f9-45c3-981e-4529b7f9c209" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanBenefitObligation"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_5f8db1a2-f26b-4686-b23e-11887898d28f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_c13777f8-3b5d-4fe8-9970-14e6753c8406" xlink:to="loc_us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation_5f8db1a2-f26b-4686-b23e-11887898d28f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3967d0ad-dda1-48c0-87da-f27ef87659c0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9880d433-b79d-4f4e-8b3a-77841ed77005" xlink:to="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3967d0ad-dda1-48c0-87da-f27ef87659c0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_ee1fb249-295c-4322-b49a-400c629da3b4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3967d0ad-dda1-48c0-87da-f27ef87659c0" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_ee1fb249-295c-4322-b49a-400c629da3b4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_9e240c01-726b-4531-9e9d-6ff0197790cb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3967d0ad-dda1-48c0-87da-f27ef87659c0" xlink:to="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_9e240c01-726b-4531-9e9d-6ff0197790cb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_25c977f5-4aa3-4801-b7f9-17bc2a7d4212" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3967d0ad-dda1-48c0-87da-f27ef87659c0" xlink:to="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_25c977f5-4aa3-4801-b7f9-17bc2a7d4212" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanSettlementsPlanAssets_1467fb1f-b4ac-4348-8a17-2c0cd13e1516" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanSettlementsPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3967d0ad-dda1-48c0-87da-f27ef87659c0" xlink:to="loc_us-gaap_DefinedBenefitPlanSettlementsPlanAssets_1467fb1f-b4ac-4348-8a17-2c0cd13e1516" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_0a8d7edd-69cc-4c9a-8c16-30f5d012a125" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3967d0ad-dda1-48c0-87da-f27ef87659c0" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_0a8d7edd-69cc-4c9a-8c16-30f5d012a125" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_ae0bbe8c-c5c3-43ed-a8ee-7a83126dc480" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_3967d0ad-dda1-48c0-87da-f27ef87659c0" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_ae0bbe8c-c5c3-43ed-a8ee-7a83126dc480" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_67f5cb59-eb99-4baa-a008-130095964d8a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_a469344c-217b-468a-9d96-dc530d020213" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9880d433-b79d-4f4e-8b3a-77841ed77005" xlink:to="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_a469344c-217b-468a-9d96-dc530d020213" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_bc74f6c2-3702-4118-95ef-830b906b2f8b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_a469344c-217b-468a-9d96-dc530d020213" xlink:to="loc_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_bc74f6c2-3702-4118-95ef-830b906b2f8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract_abc71b19-e78e-4a82-b8c9-ea1792922f6e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_9880d433-b79d-4f4e-8b3a-77841ed77005" xlink:to="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract_abc71b19-e78e-4a82-b8c9-ea1792922f6e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_0aaa32e4-9a80-4da0-9701-179932c2ce37" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract_abc71b19-e78e-4a82-b8c9-ea1792922f6e" xlink:to="loc_us-gaap_DefinedBenefitPensionPlanLiabilitiesNoncurrent_0aaa32e4-9a80-4da0-9701-179932c2ce37" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_079fb930-38ec-4fca-b676-3170f795d660" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansNoncurrentLiabilitiesAbstract_abc71b19-e78e-4a82-b8c9-ea1792922f6e" xlink:to="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_079fb930-38ec-4fca-b676-3170f795d660" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansNetPeriodicBenefitCostofthePlansDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#EmployeeRetirementPlansNetPeriodicBenefitCostofthePlansDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansNetPeriodicBenefitCostofthePlansDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_277a190d-dce4-4995-bcf4-d1781c414e14" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_94fbdb83-d39d-4fcb-a550-8b40046a1fd3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_277a190d-dce4-4995-bcf4-d1781c414e14" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_94fbdb83-d39d-4fcb-a550-8b40046a1fd3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_d54ae467-8658-4624-8c16-286acaa55cda" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_94fbdb83-d39d-4fcb-a550-8b40046a1fd3" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_d54ae467-8658-4624-8c16-286acaa55cda" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_d54ae467-8658-4624-8c16-286acaa55cda_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_d54ae467-8658-4624-8c16-286acaa55cda" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_d54ae467-8658-4624-8c16-286acaa55cda_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_c1874955-2992-4752-b787-d1f24819ef2f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_d54ae467-8658-4624-8c16-286acaa55cda" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_c1874955-2992-4752-b787-d1f24819ef2f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_8f0b84ac-0061-4303-9f26-45be52c493b6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_c1874955-2992-4752-b787-d1f24819ef2f" xlink:to="loc_us-gaap_DomesticPlanMember_8f0b84ac-0061-4303-9f26-45be52c493b6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_6fd0e291-9ad5-4c1b-85d4-1a7f1d82ee58" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_8f0b84ac-0061-4303-9f26-45be52c493b6" xlink:to="loc_country_US_6fd0e291-9ad5-4c1b-85d4-1a7f1d82ee58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_ff2ac7a2-7c00-4ccf-9c32-f1bdc9af3bbe" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_c1874955-2992-4752-b787-d1f24819ef2f" xlink:to="loc_us-gaap_ForeignPlanMember_ff2ac7a2-7c00-4ccf-9c32-f1bdc9af3bbe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeAxis_eae3582b-aadc-4b77-9812-235e048217e1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_94fbdb83-d39d-4fcb-a550-8b40046a1fd3" xlink:to="loc_us-gaap_RetirementPlanTypeAxis_eae3582b-aadc-4b77-9812-235e048217e1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_eae3582b-aadc-4b77-9812-235e048217e1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_eae3582b-aadc-4b77-9812-235e048217e1" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_eae3582b-aadc-4b77-9812-235e048217e1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanTypeDomain_4b5d7f6a-b5e1-44ec-8496-0b46d6226d33" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanTypeAxis_eae3582b-aadc-4b77-9812-235e048217e1" xlink:to="loc_us-gaap_RetirementPlanTypeDomain_4b5d7f6a-b5e1-44ec-8496-0b46d6226d33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_2a6be35b-11ff-4488-98a7-e62f44548d98" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PensionPlansDefinedBenefitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanTypeDomain_4b5d7f6a-b5e1-44ec-8496-0b46d6226d33" xlink:to="loc_us-gaap_PensionPlansDefinedBenefitMember_2a6be35b-11ff-4488-98a7-e62f44548d98" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_c830a622-a827-4539-80df-7c7e44bf4d7e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_277a190d-dce4-4995-bcf4-d1781c414e14" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_c830a622-a827-4539-80df-7c7e44bf4d7e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_3da41c9a-ca02-4567-b4a8-84608509b7ca" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_277a190d-dce4-4995-bcf4-d1781c414e14" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_3da41c9a-ca02-4567-b4a8-84608509b7ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_b64a1444-2da7-41f2-ba63-83bb94171ccb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_277a190d-dce4-4995-bcf4-d1781c414e14" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_b64a1444-2da7-41f2-ba63-83bb94171ccb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_6fb739ce-685c-4d38-b22f-a4b76a5371c1" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_277a190d-dce4-4995-bcf4-d1781c414e14" xlink:to="loc_us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1_6fb739ce-685c-4d38-b22f-a4b76a5371c1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_13f3758e-ebd1-4369-be5e-f6e7af47e322" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_277a190d-dce4-4995-bcf4-d1781c414e14" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_13f3758e-ebd1-4369-be5e-f6e7af47e322" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_af782542-f917-4213-b075-37da9bdb3de4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_277a190d-dce4-4995-bcf4-d1781c414e14" xlink:to="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_af782542-f917-4213-b075-37da9bdb3de4" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansAssumptionsUsedDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#EmployeeRetirementPlansAssumptionsUsedDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansAssumptionsUsedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_372a52ad-eb78-4cd8-be41-70e50fbbc982" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_27aea0ed-d79c-450d-9260-af4534d481af" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_372a52ad-eb78-4cd8-be41-70e50fbbc982" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_27aea0ed-d79c-450d-9260-af4534d481af" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_fe77ea7c-7c63-4b08-b404-cf6e5ebda0ee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_27aea0ed-d79c-450d-9260-af4534d481af" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_fe77ea7c-7c63-4b08-b404-cf6e5ebda0ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_fe77ea7c-7c63-4b08-b404-cf6e5ebda0ee_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_fe77ea7c-7c63-4b08-b404-cf6e5ebda0ee" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_fe77ea7c-7c63-4b08-b404-cf6e5ebda0ee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_614a699f-aa46-4dce-8765-3ba356c49b19" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_fe77ea7c-7c63-4b08-b404-cf6e5ebda0ee" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_614a699f-aa46-4dce-8765-3ba356c49b19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_efc2287e-9820-4683-a33d-15c835b93473" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_614a699f-aa46-4dce-8765-3ba356c49b19" xlink:to="loc_us-gaap_DomesticPlanMember_efc2287e-9820-4683-a33d-15c835b93473" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_18a2ad32-a5b5-43eb-8b07-9d575e678ad7" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_efc2287e-9820-4683-a33d-15c835b93473" xlink:to="loc_country_US_18a2ad32-a5b5-43eb-8b07-9d575e678ad7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_bcfaf421-3daa-498c-86c7-f07dad7529ee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_614a699f-aa46-4dce-8765-3ba356c49b19" xlink:to="loc_us-gaap_ForeignPlanMember_bcfaf421-3daa-498c-86c7-f07dad7529ee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_99c7e13f-6300-424c-bd3c-6c950c3b6b85" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_27aea0ed-d79c-450d-9260-af4534d481af" xlink:to="loc_srt_RangeAxis_99c7e13f-6300-424c-bd3c-6c950c3b6b85" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_99c7e13f-6300-424c-bd3c-6c950c3b6b85_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_99c7e13f-6300-424c-bd3c-6c950c3b6b85" xlink:to="loc_srt_RangeMember_99c7e13f-6300-424c-bd3c-6c950c3b6b85_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_84056836-2f96-4f98-a252-8f16ee59d76b" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_99c7e13f-6300-424c-bd3c-6c950c3b6b85" xlink:to="loc_srt_RangeMember_84056836-2f96-4f98-a252-8f16ee59d76b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_63b92f3d-40c1-4f99-8cbd-7e5e1b4ee755" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_84056836-2f96-4f98-a252-8f16ee59d76b" xlink:to="loc_srt_MinimumMember_63b92f3d-40c1-4f99-8cbd-7e5e1b4ee755" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_6b438ab7-68e8-4180-bebf-b93f039cf03b" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_84056836-2f96-4f98-a252-8f16ee59d76b" xlink:to="loc_srt_MaximumMember_6b438ab7-68e8-4180-bebf-b93f039cf03b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_79e24f1a-603f-4e26-af29-a637b8ffe0ac" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_372a52ad-eb78-4cd8-be41-70e50fbbc982" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_79e24f1a-603f-4e26-af29-a637b8ffe0ac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_7d7873d1-3682-4916-ae4b-43f9926cd0ac" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_79e24f1a-603f-4e26-af29-a637b8ffe0ac" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate_7d7873d1-3682-4916-ae4b-43f9926cd0ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_8a152da2-6dbb-4ed2-9ad8-1c13914b8228" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_79e24f1a-603f-4e26-af29-a637b8ffe0ac" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease_8a152da2-6dbb-4ed2-9ad8-1c13914b8228" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4f1711b0-ab6c-4252-a33e-1c39f78ac4dc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_372a52ad-eb78-4cd8-be41-70e50fbbc982" xlink:to="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4f1711b0-ab6c-4252-a33e-1c39f78ac4dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_cbaa742c-4e91-4064-9f25-30eaada6fc07" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4f1711b0-ab6c-4252-a33e-1c39f78ac4dc" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate_cbaa742c-4e91-4064-9f25-30eaada6fc07" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_1beccc68-2de5-45b2-ad2a-71711476973c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4f1711b0-ab6c-4252-a33e-1c39f78ac4dc" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets_1beccc68-2de5-45b2-ad2a-71711476973c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_d2f33025-8d1c-4a64-9252-3d6f19e40843" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract_4f1711b0-ab6c-4252-a33e-1c39f78ac4dc" xlink:to="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_d2f33025-8d1c-4a64-9252-3d6f19e40843" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansTargetAssetAllocationDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#EmployeeRetirementPlansTargetAssetAllocationDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansTargetAssetAllocationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ae3a507c-56a3-4c91-8d95-e3b6bbf530df" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0135ecda-be06-466e-afdc-9d736e6fd678" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ae3a507c-56a3-4c91-8d95-e3b6bbf530df" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0135ecda-be06-466e-afdc-9d736e6fd678" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_aee8f905-1645-4285-86e6-b993c76c8764" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0135ecda-be06-466e-afdc-9d736e6fd678" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_aee8f905-1645-4285-86e6-b993c76c8764" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_aee8f905-1645-4285-86e6-b993c76c8764_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_aee8f905-1645-4285-86e6-b993c76c8764" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_aee8f905-1645-4285-86e6-b993c76c8764_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_25413bad-f854-4ea8-936d-6ea5f6394259" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_aee8f905-1645-4285-86e6-b993c76c8764" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_25413bad-f854-4ea8-936d-6ea5f6394259" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_ba142328-0893-409f-89aa-34f1b5565782" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_25413bad-f854-4ea8-936d-6ea5f6394259" xlink:to="loc_us-gaap_DomesticPlanMember_ba142328-0893-409f-89aa-34f1b5565782" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_27936020-0876-48b1-8d69-45a302c81fdc" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_ba142328-0893-409f-89aa-34f1b5565782" xlink:to="loc_country_US_27936020-0876-48b1-8d69-45a302c81fdc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_2dfc2048-405e-4712-9735-786b71c0af7f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_25413bad-f854-4ea8-936d-6ea5f6394259" xlink:to="loc_us-gaap_ForeignPlanMember_2dfc2048-405e-4712-9735-786b71c0af7f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_a9b31a4a-909e-400a-85e8-e24cfdeb5916" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_0135ecda-be06-466e-afdc-9d736e6fd678" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_a9b31a4a-909e-400a-85e8-e24cfdeb5916" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_a9b31a4a-909e-400a-85e8-e24cfdeb5916_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_a9b31a4a-909e-400a-85e8-e24cfdeb5916" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_a9b31a4a-909e-400a-85e8-e24cfdeb5916_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_40e3ce0c-2681-4c8f-a966-1ca6050c3f65" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_a9b31a4a-909e-400a-85e8-e24cfdeb5916" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_40e3ce0c-2681-4c8f-a966-1ca6050c3f65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_20036c23-ef5f-4a09-95b4-78661a8f6e3f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_40e3ce0c-2681-4c8f-a966-1ca6050c3f65" xlink:to="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_20036c23-ef5f-4a09-95b4-78661a8f6e3f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_988d893a-ce8f-4b72-812f-e811c79b0620" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_40e3ce0c-2681-4c8f-a966-1ca6050c3f65" xlink:to="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_988d893a-ce8f-4b72-812f-e811c79b0620" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_OtherAssetAllocationsMember_0e637d4d-2bbe-4691-9c9b-b5933b5e22c2" xlink:href="livn-20231231.xsd#livn_OtherAssetAllocationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_40e3ce0c-2681-4c8f-a966-1ca6050c3f65" xlink:to="loc_livn_OtherAssetAllocationsMember_0e637d4d-2bbe-4691-9c9b-b5933b5e22c2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_35002bed-121a-485d-9f80-6e4e4e28d31b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_ae3a507c-56a3-4c91-8d95-e3b6bbf530df" xlink:to="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_35002bed-121a-485d-9f80-6e4e4e28d31b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansFairValueofRetirementBenefitPlanAssetsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#EmployeeRetirementPlansFairValueofRetirementBenefitPlanAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansFairValueofRetirementBenefitPlanAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_950b05d8-548d-497e-bf99-12583e7d8f42" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_1684a05d-9d96-41ac-ac66-b3c0690a441d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_950b05d8-548d-497e-bf99-12583e7d8f42" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_1684a05d-9d96-41ac-ac66-b3c0690a441d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_0a7004f1-d209-4699-b1f5-be61423be9e7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_1684a05d-9d96-41ac-ac66-b3c0690a441d" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_0a7004f1-d209-4699-b1f5-be61423be9e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_0a7004f1-d209-4699-b1f5-be61423be9e7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_0a7004f1-d209-4699-b1f5-be61423be9e7" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_0a7004f1-d209-4699-b1f5-be61423be9e7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_30d5c827-633f-4a7c-bcdb-484dc74855aa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_0a7004f1-d209-4699-b1f5-be61423be9e7" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_30d5c827-633f-4a7c-bcdb-484dc74855aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_8ef7198e-74fe-4685-8edd-4256064bb661" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_30d5c827-633f-4a7c-bcdb-484dc74855aa" xlink:to="loc_us-gaap_DomesticPlanMember_8ef7198e-74fe-4685-8edd-4256064bb661" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_7d338811-0786-4553-b032-51b9f4223cdd" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_8ef7198e-74fe-4685-8edd-4256064bb661" xlink:to="loc_country_US_7d338811-0786-4553-b032-51b9f4223cdd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_02be95ed-230b-416a-813c-f3f93a3e54f8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_30d5c827-633f-4a7c-bcdb-484dc74855aa" xlink:to="loc_us-gaap_ForeignPlanMember_02be95ed-230b-416a-813c-f3f93a3e54f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_2f157cc2-ed6e-413f-94b0-99a5d4a18eb2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_1684a05d-9d96-41ac-ac66-b3c0690a441d" xlink:to="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_2f157cc2-ed6e-413f-94b0-99a5d4a18eb2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_2f157cc2-ed6e-413f-94b0-99a5d4a18eb2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_2f157cc2-ed6e-413f-94b0-99a5d4a18eb2" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_2f157cc2-ed6e-413f-94b0-99a5d4a18eb2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_81cb2ebc-0c57-497a-a4dd-c7b5d33dcadc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PlanAssetCategoriesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_2f157cc2-ed6e-413f-94b0-99a5d4a18eb2" xlink:to="loc_us-gaap_PlanAssetCategoriesDomain_81cb2ebc-0c57-497a-a4dd-c7b5d33dcadc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_EquityMutualFundsMember_8e38cb7a-59fd-4d89-a006-e6df8a4090c9" xlink:href="livn-20231231.xsd#livn_EquityMutualFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_81cb2ebc-0c57-497a-a4dd-c7b5d33dcadc" xlink:to="loc_livn_EquityMutualFundsMember_8e38cb7a-59fd-4d89-a006-e6df8a4090c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FixedIncomeFundsMember_71e35d44-65c6-4ce5-95ca-ac31e00cc29d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FixedIncomeFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_81cb2ebc-0c57-497a-a4dd-c7b5d33dcadc" xlink:to="loc_us-gaap_FixedIncomeFundsMember_71e35d44-65c6-4ce5-95ca-ac31e00cc29d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MoneyMarketFundsMember_ac7b81c6-fdd1-4f94-b110-30b95f2b57e5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MoneyMarketFundsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_81cb2ebc-0c57-497a-a4dd-c7b5d33dcadc" xlink:to="loc_us-gaap_MoneyMarketFundsMember_ac7b81c6-fdd1-4f94-b110-30b95f2b57e5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c0880e57-c7bd-409f-ba6b-8582e690b647" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_1684a05d-9d96-41ac-ac66-b3c0690a441d" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c0880e57-c7bd-409f-ba6b-8582e690b647" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c0880e57-c7bd-409f-ba6b-8582e690b647_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c0880e57-c7bd-409f-ba6b-8582e690b647" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c0880e57-c7bd-409f-ba6b-8582e690b647_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6eb8e44b-a0f5-43f1-b58e-e695f9198b5e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c0880e57-c7bd-409f-ba6b-8582e690b647" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6eb8e44b-a0f5-43f1-b58e-e695f9198b5e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_225aed79-602d-4b16-8318-b947d159ded6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6eb8e44b-a0f5-43f1-b58e-e695f9198b5e" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_225aed79-602d-4b16-8318-b947d159ded6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_e685635b-edfa-4ba0-98ec-a8835c8501bc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6eb8e44b-a0f5-43f1-b58e-e695f9198b5e" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_e685635b-edfa-4ba0-98ec-a8835c8501bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_97412402-3495-4258-a0d0-533833d17990" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_6eb8e44b-a0f5-43f1-b58e-e695f9198b5e" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_97412402-3495-4258-a0d0-533833d17990" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_9b0f2a2d-ea80-44b1-b86b-ed75ef5ee137" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_950b05d8-548d-497e-bf99-12583e7d8f42" xlink:to="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_9b0f2a2d-ea80-44b1-b86b-ed75ef5ee137" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansExpectedBenefitPaymentsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#EmployeeRetirementPlansExpectedBenefitPaymentsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/EmployeeRetirementPlansExpectedBenefitPaymentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1404dbe-3ef9-4fb9-b31f-3333d42f8f50" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_83b72d23-6bd3-49fc-92b1-db1e13b61bba" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1404dbe-3ef9-4fb9-b31f-3333d42f8f50" xlink:to="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_83b72d23-6bd3-49fc-92b1-db1e13b61bba" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationAxis_cc51a6f9-571f-4cbe-a510-1245ddd84bf2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable_83b72d23-6bd3-49fc-92b1-db1e13b61bba" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationAxis_cc51a6f9-571f-4cbe-a510-1245ddd84bf2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_cc51a6f9-571f-4cbe-a510-1245ddd84bf2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_cc51a6f9-571f-4cbe-a510-1245ddd84bf2" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_cc51a6f9-571f-4cbe-a510-1245ddd84bf2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetirementPlanSponsorLocationDomain_3da903c9-a707-4f32-a768-c351f0d7e77c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetirementPlanSponsorLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationAxis_cc51a6f9-571f-4cbe-a510-1245ddd84bf2" xlink:to="loc_us-gaap_RetirementPlanSponsorLocationDomain_3da903c9-a707-4f32-a768-c351f0d7e77c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticPlanMember_fe4a82d5-4de3-49c2-a787-8abb4722fb4f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_3da903c9-a707-4f32-a768-c351f0d7e77c" xlink:to="loc_us-gaap_DomesticPlanMember_fe4a82d5-4de3-49c2-a787-8abb4722fb4f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_480db52c-bf37-4fa7-8d43-ce77faf32207" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DomesticPlanMember_fe4a82d5-4de3-49c2-a787-8abb4722fb4f" xlink:to="loc_country_US_480db52c-bf37-4fa7-8d43-ce77faf32207" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignPlanMember_3ab10ef5-e461-4892-b585-fbfeb3f683f9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RetirementPlanSponsorLocationDomain_3da903c9-a707-4f32-a768-c351f0d7e77c" xlink:to="loc_us-gaap_ForeignPlanMember_3ab10ef5-e461-4892-b585-fbfeb3f683f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_99c17532-897a-420a-b3ac-15bc27c56863" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1404dbe-3ef9-4fb9-b31f-3333d42f8f50" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths_99c17532-897a-420a-b3ac-15bc27c56863" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_9881f276-d8ea-462b-ae7c-716887437064" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1404dbe-3ef9-4fb9-b31f-3333d42f8f50" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo_9881f276-d8ea-462b-ae7c-716887437064" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_0a3e95cf-26a6-4b13-a9df-33479325f9f8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1404dbe-3ef9-4fb9-b31f-3333d42f8f50" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree_0a3e95cf-26a6-4b13-a9df-33479325f9f8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_54b72a32-4a0f-4c7c-b853-6cd3eadcdea7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1404dbe-3ef9-4fb9-b31f-3333d42f8f50" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour_54b72a32-4a0f-4c7c-b853-6cd3eadcdea7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_b1239ffe-5a6a-4ab8-bf4b-413ae98bc418" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1404dbe-3ef9-4fb9-b31f-3333d42f8f50" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive_b1239ffe-5a6a-4ab8-bf4b-413ae98bc418" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_d333f31d-a8a7-4624-9eb7-49e45a2b9ef2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_f1404dbe-3ef9-4fb9-b31f-3333d42f8f50" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter_d333f31d-a8a7-4624-9eb7-49e45a2b9ef2" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/IncomeTaxesReconciliationofDeferredTaxAssetValuationsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#IncomeTaxesReconciliationofDeferredTaxAssetValuationsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/IncomeTaxesReconciliationofDeferredTaxAssetValuationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_ada835b3-ecfa-43a7-a18a-2876ff4109b7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLossCarryforwardsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_89c02ca5-0444-43b3-a59b-1b542440e300" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLossCarryforwardsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_ada835b3-ecfa-43a7-a18a-2876ff4109b7" xlink:to="loc_us-gaap_OperatingLossCarryforwardsTable_89c02ca5-0444-43b3-a59b-1b542440e300" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_2861b903-bc4d-4aee-a546-733bf8e3b53f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_89c02ca5-0444-43b3-a59b-1b542440e300" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_2861b903-bc4d-4aee-a546-733bf8e3b53f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_2861b903-bc4d-4aee-a546-733bf8e3b53f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_2861b903-bc4d-4aee-a546-733bf8e3b53f" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_2861b903-bc4d-4aee-a546-733bf8e3b53f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDomain_219cace2-8524-4543-ba76-59d5a2faf472" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowancesAndReservesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesTypeAxis_2861b903-bc4d-4aee-a546-733bf8e3b53f" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDomain_219cace2-8524-4543-ba76-59d5a2faf472" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_707964d0-82a1-4412-ac00-2f9682dd66fa" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ValuationAllowancesAndReservesDomain_219cace2-8524-4543-ba76-59d5a2faf472" xlink:to="loc_us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember_707964d0-82a1-4412-ac00-2f9682dd66fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_7cfb6d74-ea24-4c95-bcf3-c49e71bef1a0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_MovementInValuationAllowancesAndReservesRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_ada835b3-ecfa-43a7-a18a-2876ff4109b7" xlink:to="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_7cfb6d74-ea24-4c95-bcf3-c49e71bef1a0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_1cebe2d7-610a-4bc2-ac9b-4209beac0e9b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_7cfb6d74-ea24-4c95-bcf3-c49e71bef1a0" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesBalance_1cebe2d7-610a-4bc2-ac9b-4209beac0e9b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_9738fd76-04e8-4fa9-b5dc-98dff0fdef07" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_7cfb6d74-ea24-4c95-bcf3-c49e71bef1a0" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense_9738fd76-04e8-4fa9-b5dc-98dff0fdef07" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesDeductions_1cd58605-dbdd-4dae-b729-22530f2bb37d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowancesAndReservesDeductions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MovementInValuationAllowancesAndReservesRollForward_7cfb6d74-ea24-4c95-bcf3-c49e71bef1a0" xlink:to="loc_us-gaap_ValuationAllowancesAndReservesDeductions_1cd58605-dbdd-4dae-b729-22530f2bb37d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowancesAndReservesBalance_4a8fe1cc-7c9c-49db-986d-2f329d2e49d4" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowancesAndReservesBalance"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/IncomeTaxesOperatingLossandTaxCreditCarryforwardsDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#IncomeTaxesOperatingLossandTaxCreditCarryforwardsDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/IncomeTaxesOperatingLossandTaxCreditCarryforwardsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_d9c971ef-75ab-4959-a11e-8ee6ee9e5266" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLossCarryforwardsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_d36d769c-a1d5-4634-b0b6-be56a1845dd2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLossCarryforwardsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d9c971ef-75ab-4959-a11e-8ee6ee9e5266" xlink:to="loc_us-gaap_OperatingLossCarryforwardsTable_d36d769c-a1d5-4634-b0b6-be56a1845dd2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_5c872112-d934-406f-9ae4-429b30033d84" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_d36d769c-a1d5-4634-b0b6-be56a1845dd2" xlink:to="loc_srt_StatementGeographicalAxis_5c872112-d934-406f-9ae4-429b30033d84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_5c872112-d934-406f-9ae4-429b30033d84_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_5c872112-d934-406f-9ae4-429b30033d84" xlink:to="loc_srt_SegmentGeographicalDomain_5c872112-d934-406f-9ae4-429b30033d84_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_d079574f-3649-4d20-bf35-eaece7532708" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_5c872112-d934-406f-9ae4-429b30033d84" xlink:to="loc_srt_SegmentGeographicalDomain_d079574f-3649-4d20-bf35-eaece7532708" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_GB_afe47492-4eba-4c79-b071-3d7cb4ad3042" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_GB"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d079574f-3649-4d20-bf35-eaece7532708" xlink:to="loc_country_GB_afe47492-4eba-4c79-b071-3d7cb4ad3042" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_EuropeExcludingUKMember_41a1c2b7-1344-46f8-b5bf-97e4e4035b8c" xlink:href="livn-20231231.xsd#livn_EuropeExcludingUKMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d079574f-3649-4d20-bf35-eaece7532708" xlink:to="loc_livn_EuropeExcludingUKMember_41a1c2b7-1344-46f8-b5bf-97e4e4035b8c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_bac4123c-df7e-4a3f-9863-80d29cdab281" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d079574f-3649-4d20-bf35-eaece7532708" xlink:to="loc_country_US_bac4123c-df7e-4a3f-9863-80d29cdab281" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SouthAmericaMember_e97be49e-1cd0-44a6-975b-24ad7955ea48" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SouthAmericaMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d079574f-3649-4d20-bf35-eaece7532708" xlink:to="loc_srt_SouthAmericaMember_e97be49e-1cd0-44a6-975b-24ad7955ea48" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_FarEastMember_0d3146ba-affa-4ac7-9d54-95cfc4568d1e" xlink:href="livn-20231231.xsd#livn_FarEastMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d079574f-3649-4d20-bf35-eaece7532708" xlink:to="loc_livn_FarEastMember_0d3146ba-affa-4ac7-9d54-95cfc4568d1e" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonUsMember_0541e76f-b999-4d19-9ae4-cc8eb395ec75" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NonUsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d079574f-3649-4d20-bf35-eaece7532708" xlink:to="loc_us-gaap_NonUsMember_0541e76f-b999-4d19-9ae4-cc8eb395ec75" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodAxis_fda149f8-53c1-4ff6-a418-e8da32bf4623" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxPeriodAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_d36d769c-a1d5-4634-b0b6-be56a1845dd2" xlink:to="loc_us-gaap_TaxPeriodAxis_fda149f8-53c1-4ff6-a418-e8da32bf4623" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodDomain_fda149f8-53c1-4ff6-a418-e8da32bf4623_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxPeriodAxis_fda149f8-53c1-4ff6-a418-e8da32bf4623" xlink:to="loc_us-gaap_TaxPeriodDomain_fda149f8-53c1-4ff6-a418-e8da32bf4623_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxPeriodDomain_95ac13b7-abf2-4b07-9a75-3c395df84155" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxPeriodDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxPeriodAxis_fda149f8-53c1-4ff6-a418-e8da32bf4623" xlink:to="loc_us-gaap_TaxPeriodDomain_95ac13b7-abf2-4b07-9a75-3c395df84155" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_IndefiniteTaxYearsMember_4c37c90d-c4e3-493a-98e1-7bc4d2dab7c4" xlink:href="livn-20231231.xsd#livn_IndefiniteTaxYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxPeriodDomain_95ac13b7-abf2-4b07-9a75-3c395df84155" xlink:to="loc_livn_IndefiniteTaxYearsMember_4c37c90d-c4e3-493a-98e1-7bc4d2dab7c4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:href="livn-20231231.xsd#livn_VariousTaxExpirationYearsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxPeriodDomain_95ac13b7-abf2-4b07-9a75-3c395df84155" xlink:to="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TaxYears2023IndefiniteMember_ca6c8e6e-8dc4-4e86-a8f1-9dc5b375a793" xlink:href="livn-20231231.xsd#livn_TaxYears2023IndefiniteMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:to="loc_livn_TaxYears2023IndefiniteMember_ca6c8e6e-8dc4-4e86-a8f1-9dc5b375a793" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TaxYears20282034Member_bc1621fe-6937-4e3d-b0b3-4e29713504a4" xlink:href="livn-20231231.xsd#livn_TaxYears20282034Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:to="loc_livn_TaxYears20282034Member_bc1621fe-6937-4e3d-b0b3-4e29713504a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TaxYears20232042Member_784b019f-2e0b-4c36-8cc7-82378d66f6f2" xlink:href="livn-20231231.xsd#livn_TaxYears20232042Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:to="loc_livn_TaxYears20232042Member_784b019f-2e0b-4c36-8cc7-82378d66f6f2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TaxYears20282042Member_d08b3b98-ce3b-4d3b-8133-76d928072b05" xlink:href="livn-20231231.xsd#livn_TaxYears20282042Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:to="loc_livn_TaxYears20282042Member_d08b3b98-ce3b-4d3b-8133-76d928072b05" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TaxYear20252032Member_7b7fedfb-0c98-46f0-9aa8-b17df2944c94" xlink:href="livn-20231231.xsd#livn_TaxYear20252032Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:to="loc_livn_TaxYear20252032Member_7b7fedfb-0c98-46f0-9aa8-b17df2944c94" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TaxPeriod20252030Member_14e358c4-331d-4ac1-b55d-3f8cb31eef1c" xlink:href="livn-20231231.xsd#livn_TaxPeriod20252030Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:to="loc_livn_TaxPeriod20252030Member_14e358c4-331d-4ac1-b55d-3f8cb31eef1c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TaxYear20232043Member_8af186be-3b5f-41c7-9e07-f2767ae6584e" xlink:href="livn-20231231.xsd#livn_TaxYear20232043Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:to="loc_livn_TaxYear20232043Member_8af186be-3b5f-41c7-9e07-f2767ae6584e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TaxYear20302042Member_a1516aa5-c65c-4781-9c7e-aeadb159acc5" xlink:href="livn-20231231.xsd#livn_TaxYear20302042Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:to="loc_livn_TaxYear20302042Member_a1516aa5-c65c-4781-9c7e-aeadb159acc5" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_TaxYear20242034Member_10247a97-d0e9-46c1-9be1-9c068e369fa7" xlink:href="livn-20231231.xsd#livn_TaxYear20242034Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_livn_VariousTaxExpirationYearsMember_d12fcbb5-8193-4fe7-9429-82ebec5c53a5" xlink:to="loc_livn_TaxYear20242034Member_10247a97-d0e9-46c1-9be1-9c068e369fa7" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_879c3259-3a8d-499c-b03e-8548fb7c4174" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_d36d769c-a1d5-4634-b0b6-be56a1845dd2" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_879c3259-3a8d-499c-b03e-8548fb7c4174" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_879c3259-3a8d-499c-b03e-8548fb7c4174_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_879c3259-3a8d-499c-b03e-8548fb7c4174" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_879c3259-3a8d-499c-b03e-8548fb7c4174_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_bdadbc55-9d5b-41e2-b64b-f52f5cb09f0a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_879c3259-3a8d-499c-b03e-8548fb7c4174" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_bdadbc55-9d5b-41e2-b64b-f52f5cb09f0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember_61377513-18a5-4ed7-bada-66d589b31bef" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_bdadbc55-9d5b-41e2-b64b-f52f5cb09f0a" xlink:to="loc_us-gaap_DomesticCountryMember_61377513-18a5-4ed7-bada-66d589b31bef" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_0d76266e-67fa-452b-85ab-75cdc9dd981d" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_bdadbc55-9d5b-41e2-b64b-f52f5cb09f0a" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_0d76266e-67fa-452b-85ab-75cdc9dd981d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameAxis_db3475d3-3755-4d05-959b-070c6dad9913" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_d36d769c-a1d5-4634-b0b6-be56a1845dd2" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameAxis_db3475d3-3755-4d05-959b-070c6dad9913" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_db3475d3-3755-4d05-959b-070c6dad9913_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_db3475d3-3755-4d05-959b-070c6dad9913" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_db3475d3-3755-4d05-959b-070c6dad9913_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_bded176d-8488-49ee-8bba-a2c00dbd503b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_db3475d3-3755-4d05-959b-070c6dad9913" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_bded176d-8488-49ee-8bba-a2c00dbd503b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_eaf90824-3697-4d75-80ac-f66fe67f8eee" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_bded176d-8488-49ee-8bba-a2c00dbd503b" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_eaf90824-3697-4d75-80ac-f66fe67f8eee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DomesticCountryMember_496875b7-4114-4557-8344-cf9f862cf4d9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DomesticCountryMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_bded176d-8488-49ee-8bba-a2c00dbd503b" xlink:to="loc_us-gaap_DomesticCountryMember_496875b7-4114-4557-8344-cf9f862cf4d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardAxis_18818fae-4e9a-4b2a-9cb9-7ef6aea315db" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_d36d769c-a1d5-4634-b0b6-be56a1845dd2" xlink:to="loc_us-gaap_TaxCreditCarryforwardAxis_18818fae-4e9a-4b2a-9cb9-7ef6aea315db" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_18818fae-4e9a-4b2a-9cb9-7ef6aea315db_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_18818fae-4e9a-4b2a-9cb9-7ef6aea315db" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_18818fae-4e9a-4b2a-9cb9-7ef6aea315db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxCreditCarryforwardNameDomain_ca6f9b11-816c-4909-8420-08166b6141cf" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_TaxCreditCarryforwardNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_TaxCreditCarryforwardAxis_18818fae-4e9a-4b2a-9cb9-7ef6aea315db" xlink:to="loc_us-gaap_TaxCreditCarryforwardNameDomain_ca6f9b11-816c-4909-8420-08166b6141cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchMember_b2150397-5931-4bed-b214-bbb665549b68" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ResearchMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TaxCreditCarryforwardNameDomain_ca6f9b11-816c-4909-8420-08166b6141cf" xlink:to="loc_us-gaap_ResearchMember_b2150397-5931-4bed-b214-bbb665549b68" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwards_acef9ac9-1c19-44ec-9d71-60a5c3267fda" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d9c971ef-75ab-4959-a11e-8ee6ee9e5266" xlink:to="loc_us-gaap_OperatingLossCarryforwards_acef9ac9-1c19-44ec-9d71-60a5c3267fda" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign_1a2d68f5-18c7-4dca-b1fc-84ae907ccf78" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d9c971ef-75ab-4959-a11e-8ee6ee9e5266" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign_1a2d68f5-18c7-4dca-b1fc-84ae907ccf78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic_a24c490b-9ec6-407e-9aa1-0867caeba10c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d9c971ef-75ab-4959-a11e-8ee6ee9e5266" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic_a24c490b-9ec6-407e-9aa1-0867caeba10c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign_95ba9d61-d0b1-4077-9221-01d536fbffec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d9c971ef-75ab-4959-a11e-8ee6ee9e5266" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign_95ba9d61-d0b1-4077-9221-01d536fbffec" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_f7a41a4a-6b8e-48d4-967b-1ca98d1a9d21" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxAssetsTaxCreditCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d9c971ef-75ab-4959-a11e-8ee6ee9e5266" xlink:to="loc_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards_f7a41a4a-6b8e-48d4-967b-1ca98d1a9d21" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditsCarryforwards_008dea99-d366-4d72-9d8d-0e10ec680bc4" xlink:href="livn-20231231.xsd#livn_DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditsCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_d9c971ef-75ab-4959-a11e-8ee6ee9e5266" xlink:to="loc_livn_DeferredTaxAssetsOperatingLossCarryforwardsAndTaxCreditsCarryforwards_008dea99-d366-4d72-9d8d-0e10ec680bc4" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/IncomeTaxesNarrativeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#IncomeTaxesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/IncomeTaxesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_330365fb-076c-4cf1-af8f-a8d09ebb31e2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLossCarryforwardsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_bdd88824-0733-401d-84f5-c54f3171a68a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingLossCarryforwardsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_330365fb-076c-4cf1-af8f-a8d09ebb31e2" xlink:to="loc_us-gaap_OperatingLossCarryforwardsTable_bdd88824-0733-401d-84f5-c54f3171a68a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameAxis_66973b28-79a5-4269-8386-2c16bf0233ec" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_OperatingLossCarryforwardsTable_bdd88824-0733-401d-84f5-c54f3171a68a" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameAxis_66973b28-79a5-4269-8386-2c16bf0233ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_66973b28-79a5-4269-8386-2c16bf0233ec_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_66973b28-79a5-4269-8386-2c16bf0233ec" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_66973b28-79a5-4269-8386-2c16bf0233ec_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityNameDomain_b3753674-5f36-40a3-9644-ae9939d1823a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxAuthorityNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameAxis_66973b28-79a5-4269-8386-2c16bf0233ec" xlink:to="loc_us-gaap_IncomeTaxAuthorityNameDomain_b3753674-5f36-40a3-9644-ae9939d1823a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HerMajestysRevenueAndCustomsHMRCMember_4b1181af-29be-4551-a200-9e0f9799c62f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_HerMajestysRevenueAndCustomsHMRCMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityNameDomain_b3753674-5f36-40a3-9644-ae9939d1823a" xlink:to="loc_us-gaap_HerMajestysRevenueAndCustomsHMRCMember_4b1181af-29be-4551-a200-9e0f9799c62f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsValuationAllowance_5d414398-aaff-46f8-a510-faf1751b95d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxAssetsValuationAllowance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_330365fb-076c-4cf1-af8f-a8d09ebb31e2" xlink:to="loc_us-gaap_DeferredTaxAssetsValuationAllowance_5d414398-aaff-46f8-a510-faf1751b95d2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_185fa0b6-b499-4d5f-93d9-82f5edfbda33" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_330365fb-076c-4cf1-af8f-a8d09ebb31e2" xlink:to="loc_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_185fa0b6-b499-4d5f-93d9-82f5edfbda33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_fe2384c8-1acd-4f0f-b91c-665f8a7a4151" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_330365fb-076c-4cf1-af8f-a8d09ebb31e2" xlink:to="loc_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_fe2384c8-1acd-4f0f-b91c-665f8a7a4151" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_09088329-efec-4eb9-acf4-cf37d9d380a6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_330365fb-076c-4cf1-af8f-a8d09ebb31e2" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_09088329-efec-4eb9-acf4-cf37d9d380a6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_1fcd86a1-eeb8-41e9-b975-c1dc4b79d3b2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_330365fb-076c-4cf1-af8f-a8d09ebb31e2" xlink:to="loc_us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate_1fcd86a1-eeb8-41e9-b975-c1dc4b79d3b2" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/EarningsPerShareDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#EarningsPerShareDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/EarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_3b2a68c8-566a-48b6-b3b0-6c83015a7b2f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_193ac3aa-5b4e-4ced-b204-dea4f80184b8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_3b2a68c8-566a-48b6-b3b0-6c83015a7b2f" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_193ac3aa-5b4e-4ced-b204-dea4f80184b8" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_3bc14bce-68f8-4c6b-8aec-70b616135871" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTable_193ac3aa-5b4e-4ced-b204-dea4f80184b8" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_3bc14bce-68f8-4c6b-8aec-70b616135871" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3bc14bce-68f8-4c6b-8aec-70b616135871_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_3bc14bce-68f8-4c6b-8aec-70b616135871" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3bc14bce-68f8-4c6b-8aec-70b616135871_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_530256db-ea4b-4286-afcf-53809994dd55" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_3bc14bce-68f8-4c6b-8aec-70b616135871" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_530256db-ea4b-4286-afcf-53809994dd55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockCompensationPlanMember_b6f02aa9-9bf5-4ada-9fdb-38ec4143f472" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StockCompensationPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_530256db-ea4b-4286-afcf-53809994dd55" xlink:to="loc_us-gaap_StockCompensationPlanMember_b6f02aa9-9bf5-4ada-9fdb-38ec4143f472" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_b1105435-184d-4dcf-afda-0977a0dac3a6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_3b2a68c8-566a-48b6-b3b0-6c83015a7b2f" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_b1105435-184d-4dcf-afda-0977a0dac3a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_9d14b9c4-47a6-457e-973d-40b2f8cad453" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_3b2a68c8-566a-48b6-b3b0-6c83015a7b2f" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_9d14b9c4-47a6-457e-973d-40b2f8cad453" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_8d5568f4-930c-4e21-b968-c070a6766309" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_3b2a68c8-566a-48b6-b3b0-6c83015a7b2f" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_8d5568f4-930c-4e21-b968-c070a6766309" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_b6a6dcf3-8c18-4976-8301-228df979b84c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_3b2a68c8-566a-48b6-b3b0-6c83015a7b2f" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_b6a6dcf3-8c18-4976-8301-228df979b84c" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/GeographicandSegmentInformationRevenuebyOperatingSegmentDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#GeographicandSegmentInformationRevenuebyOperatingSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/GeographicandSegmentInformationRevenuebyOperatingSegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_bb4ce620-3768-49ee-a12d-2ef0f0c6f51e" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_108a1047-aeb0-4685-a95c-2823e566a64f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_bb4ce620-3768-49ee-a12d-2ef0f0c6f51e" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_108a1047-aeb0-4685-a95c-2823e566a64f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_4b11300b-6f83-4d86-95be-8fd3fd089bd7" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_108a1047-aeb0-4685-a95c-2823e566a64f" xlink:to="loc_srt_ConsolidationItemsAxis_4b11300b-6f83-4d86-95be-8fd3fd089bd7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_4b11300b-6f83-4d86-95be-8fd3fd089bd7_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_4b11300b-6f83-4d86-95be-8fd3fd089bd7" xlink:to="loc_srt_ConsolidationItemsDomain_4b11300b-6f83-4d86-95be-8fd3fd089bd7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_c39ad278-dad3-4024-b324-1fff188dee1a" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_4b11300b-6f83-4d86-95be-8fd3fd089bd7" xlink:to="loc_srt_ConsolidationItemsDomain_c39ad278-dad3-4024-b324-1fff188dee1a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_307b17c6-c41d-4a6b-8aa5-7600fff65ebb" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_c39ad278-dad3-4024-b324-1fff188dee1a" xlink:to="loc_us-gaap_OperatingSegmentsMember_307b17c6-c41d-4a6b-8aa5-7600fff65ebb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_bc3ecd5f-0f08-453d-a520-d72fcf158f78" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_c39ad278-dad3-4024-b324-1fff188dee1a" xlink:to="loc_us-gaap_CorporateNonSegmentMember_bc3ecd5f-0f08-453d-a520-d72fcf158f78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_42c3ddb1-d929-4285-846e-8db854c7c4a1" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_108a1047-aeb0-4685-a95c-2823e566a64f" xlink:to="loc_srt_StatementGeographicalAxis_42c3ddb1-d929-4285-846e-8db854c7c4a1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_42c3ddb1-d929-4285-846e-8db854c7c4a1_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_42c3ddb1-d929-4285-846e-8db854c7c4a1" xlink:to="loc_srt_SegmentGeographicalDomain_42c3ddb1-d929-4285-846e-8db854c7c4a1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_d04e1256-35f9-45bd-a2ca-7c8f1458742f" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_42c3ddb1-d929-4285-846e-8db854c7c4a1" xlink:to="loc_srt_SegmentGeographicalDomain_d04e1256-35f9-45bd-a2ca-7c8f1458742f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_d7ac0b89-9008-475d-8eb8-7ff4c9c14f19" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d04e1256-35f9-45bd-a2ca-7c8f1458742f" xlink:to="loc_country_US_d7ac0b89-9008-475d-8eb8-7ff4c9c14f19" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EuropeMember_34ae74dd-1493-422e-a630-de32a7380526" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_EuropeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d04e1256-35f9-45bd-a2ca-7c8f1458742f" xlink:to="loc_srt_EuropeMember_34ae74dd-1493-422e-a630-de32a7380526" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_LocationsExcludingTheUnitedStatesAndEuropeMember_cf26f5ef-be77-4c83-a03e-09abd017ea99" xlink:href="livn-20231231.xsd#livn_LocationsExcludingTheUnitedStatesAndEuropeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d04e1256-35f9-45bd-a2ca-7c8f1458742f" xlink:to="loc_livn_LocationsExcludingTheUnitedStatesAndEuropeMember_cf26f5ef-be77-4c83-a03e-09abd017ea99" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_GB_1205fa41-7f38-4bf6-ae73-159418f9ad0d" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_GB"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_d04e1256-35f9-45bd-a2ca-7c8f1458742f" xlink:to="loc_country_GB_1205fa41-7f38-4bf6-ae73-159418f9ad0d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_ff7f04ad-6246-4da7-9430-6bc36d6aa200" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_108a1047-aeb0-4685-a95c-2823e566a64f" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_ff7f04ad-6246-4da7-9430-6bc36d6aa200" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_ff7f04ad-6246-4da7-9430-6bc36d6aa200_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_ff7f04ad-6246-4da7-9430-6bc36d6aa200" xlink:to="loc_us-gaap_SegmentDomain_ff7f04ad-6246-4da7-9430-6bc36d6aa200_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_87cc011d-d989-42c5-83c5-8a420fb2a65b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_ff7f04ad-6246-4da7-9430-6bc36d6aa200" xlink:to="loc_us-gaap_SegmentDomain_87cc011d-d989-42c5-83c5-8a420fb2a65b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CardiopulmonarySegmentMember_0e13dddf-3875-4db3-905c-0b1b5e218feb" xlink:href="livn-20231231.xsd#livn_CardiopulmonarySegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_87cc011d-d989-42c5-83c5-8a420fb2a65b" xlink:to="loc_livn_CardiopulmonarySegmentMember_0e13dddf-3875-4db3-905c-0b1b5e218feb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_NeuromodulationSegmentMember_631b40eb-d7ca-4496-bc58-d099b9fa628c" xlink:href="livn-20231231.xsd#livn_NeuromodulationSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_87cc011d-d989-42c5-83c5-8a420fb2a65b" xlink:to="loc_livn_NeuromodulationSegmentMember_631b40eb-d7ca-4496-bc58-d099b9fa628c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_AdvancedCirculatorySupportSegmentMember_31027ed6-dfb2-4579-b231-d12f4d3bf2c8" xlink:href="livn-20231231.xsd#livn_AdvancedCirculatorySupportSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_87cc011d-d989-42c5-83c5-8a420fb2a65b" xlink:to="loc_livn_AdvancedCirculatorySupportSegmentMember_31027ed6-dfb2-4579-b231-d12f4d3bf2c8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_77d4b934-73c0-4cab-abd8-6bd44da7380b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_bb4ce620-3768-49ee-a12d-2ef0f0c6f51e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_77d4b934-73c0-4cab-abd8-6bd44da7380b" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/GeographicandSegmentInformationReconciliationofSegmentIncomeDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#GeographicandSegmentInformationReconciliationofSegmentIncomeDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/GeographicandSegmentInformationReconciliationofSegmentIncomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_e3fa1e62-de0a-447b-a8a6-1f66906dadbd" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_e3fa1e62-de0a-447b-a8a6-1f66906dadbd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_4de1fd51-5e02-4fbb-9d00-1af550907365" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_e3fa1e62-de0a-447b-a8a6-1f66906dadbd" xlink:to="loc_srt_ConsolidationItemsAxis_4de1fd51-5e02-4fbb-9d00-1af550907365" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_4de1fd51-5e02-4fbb-9d00-1af550907365_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_4de1fd51-5e02-4fbb-9d00-1af550907365" xlink:to="loc_srt_ConsolidationItemsDomain_4de1fd51-5e02-4fbb-9d00-1af550907365_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_10853f2f-f444-429b-a91a-72b1f9e9c513" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_4de1fd51-5e02-4fbb-9d00-1af550907365" xlink:to="loc_srt_ConsolidationItemsDomain_10853f2f-f444-429b-a91a-72b1f9e9c513" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_9088e754-ae81-4d3f-8a64-ecea9ebe915f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_10853f2f-f444-429b-a91a-72b1f9e9c513" xlink:to="loc_us-gaap_OperatingSegmentsMember_9088e754-ae81-4d3f-8a64-ecea9ebe915f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_21f5f074-2a65-4d2e-9d3b-ecea8f6fdb79" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_10853f2f-f444-429b-a91a-72b1f9e9c513" xlink:to="loc_us-gaap_CorporateNonSegmentMember_21f5f074-2a65-4d2e-9d3b-ecea8f6fdb79" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_70fb1106-5183-4e74-984a-34725b58aef1" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_e3fa1e62-de0a-447b-a8a6-1f66906dadbd" xlink:to="loc_srt_StatementGeographicalAxis_70fb1106-5183-4e74-984a-34725b58aef1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_70fb1106-5183-4e74-984a-34725b58aef1_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_70fb1106-5183-4e74-984a-34725b58aef1" xlink:to="loc_srt_SegmentGeographicalDomain_70fb1106-5183-4e74-984a-34725b58aef1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_48132aaa-a75a-4b3d-b91e-aaead7bfddd1" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_70fb1106-5183-4e74-984a-34725b58aef1" xlink:to="loc_srt_SegmentGeographicalDomain_48132aaa-a75a-4b3d-b91e-aaead7bfddd1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_SaluggiaItalyMember_0f1af0ba-fe35-4edb-bcf2-9d88368044d8" xlink:href="livn-20231231.xsd#livn_SaluggiaItalyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_48132aaa-a75a-4b3d-b91e-aaead7bfddd1" xlink:to="loc_livn_SaluggiaItalyMember_0f1af0ba-fe35-4edb-bcf2-9d88368044d8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_3bb8a94c-4003-4af3-aac5-d558d55990cc" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_e3fa1e62-de0a-447b-a8a6-1f66906dadbd" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_3bb8a94c-4003-4af3-aac5-d558d55990cc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_3bb8a94c-4003-4af3-aac5-d558d55990cc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_3bb8a94c-4003-4af3-aac5-d558d55990cc" xlink:to="loc_us-gaap_SegmentDomain_3bb8a94c-4003-4af3-aac5-d558d55990cc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_0076c23c-0222-421c-a99d-d357abd9cd09" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_3bb8a94c-4003-4af3-aac5-d558d55990cc" xlink:to="loc_us-gaap_SegmentDomain_0076c23c-0222-421c-a99d-d357abd9cd09" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CardiopulmonarySegmentMember_f2e39e71-189a-42c3-b100-2e350d442642" xlink:href="livn-20231231.xsd#livn_CardiopulmonarySegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0076c23c-0222-421c-a99d-d357abd9cd09" xlink:to="loc_livn_CardiopulmonarySegmentMember_f2e39e71-189a-42c3-b100-2e350d442642" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_NeuromodulationSegmentMember_52c4ddb5-d19c-4173-886f-25ec74180535" xlink:href="livn-20231231.xsd#livn_NeuromodulationSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0076c23c-0222-421c-a99d-d357abd9cd09" xlink:to="loc_livn_NeuromodulationSegmentMember_52c4ddb5-d19c-4173-886f-25ec74180535" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_AdvancedCirculatorySupportSegmentMember_21a4fbe5-875d-48ba-bb27-96606f9e6b17" xlink:href="livn-20231231.xsd#livn_AdvancedCirculatorySupportSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_0076c23c-0222-421c-a99d-d357abd9cd09" xlink:to="loc_livn_AdvancedCirculatorySupportSegmentMember_21a4fbe5-875d-48ba-bb27-96606f9e6b17" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_d5b5909f-31d5-4950-8dea-e7643571b173" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_e3fa1e62-de0a-447b-a8a6-1f66906dadbd" xlink:to="loc_srt_ProductOrServiceAxis_d5b5909f-31d5-4950-8dea-e7643571b173" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_d5b5909f-31d5-4950-8dea-e7643571b173_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_d5b5909f-31d5-4950-8dea-e7643571b173" xlink:to="loc_srt_ProductsAndServicesDomain_d5b5909f-31d5-4950-8dea-e7643571b173_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_e5f4fc95-3e5e-40c2-99bb-08cf7b00946a" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_d5b5909f-31d5-4950-8dea-e7643571b173" xlink:to="loc_srt_ProductsAndServicesDomain_e5f4fc95-3e5e-40c2-99bb-08cf7b00946a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_HeartValvesMember_53e5e419-2c63-4e6b-8d79-fb2e82482310" xlink:href="livn-20231231.xsd#livn_HeartValvesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_e5f4fc95-3e5e-40c2-99bb-08cf7b00946a" xlink:to="loc_livn_HeartValvesMember_53e5e419-2c63-4e6b-8d79-fb2e82482310" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_f38b790c-e27a-4c2a-94c7-f56f7951149a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:to="loc_us-gaap_OperatingIncomeLoss_f38b790c-e27a-4c2a-94c7-f56f7951149a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_2c5c1fc1-470f-4b38-a53b-a1d640216dd9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:to="loc_us-gaap_InterestExpense_2c5c1fc1-470f-4b38-a53b-a1d640216dd9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_358ed064-90c5-4b35-8fa1-f140595acf61" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:to="loc_us-gaap_GainsLossesOnExtinguishmentOfDebt_358ed064-90c5-4b35-8fa1-f140595acf61" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ForeignCurrencyTransactionGainLossAndOtherNonoperatingIncome_e82b108d-4fd3-4b99-ac67-cacc23a88b01" xlink:href="livn-20231231.xsd#livn_ForeignCurrencyTransactionGainLossAndOtherNonoperatingIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:to="loc_livn_ForeignCurrencyTransactionGainLossAndOtherNonoperatingIncome_e82b108d-4fd3-4b99-ac67-cacc23a88b01" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0c1aa4c7-6e00-471f-bcb8-6b2765172fe7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_0c1aa4c7-6e00-471f-bcb8-6b2765172fe7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualProvision_6921b93b-8e2d-4c78-8414-7a8bf06559f7" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LossContingencyAccrualProvision"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:to="loc_us-gaap_LossContingencyAccrualProvision_6921b93b-8e2d-4c78-8414-7a8bf06559f7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges_359ca121-d8ef-4231-b953-36bc86324163" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges_359ca121-d8ef-4231-b953-36bc86324163" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_08f58a90-fd2b-459e-a131-84b42e427e2f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:to="loc_us-gaap_InventoryWriteDown_08f58a90-fd2b-459e-a131-84b42e427e2f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_65ef4e28-573b-4194-8371-31ade2662434" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_18e46150-6038-4fcf-b59b-e0aac60feb16" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_65ef4e28-573b-4194-8371-31ade2662434" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/GeographicandSegmentInformationAssetsbyReportableSegmentDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#GeographicandSegmentInformationAssetsbyReportableSegmentDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/GeographicandSegmentInformationAssetsbyReportableSegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_397e5edb-157e-44c3-80bd-fc85abe9e079" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_ce262b15-5ddb-4e53-963d-5ab47541f3c0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_397e5edb-157e-44c3-80bd-fc85abe9e079" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_ce262b15-5ddb-4e53-963d-5ab47541f3c0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_3acf7c1c-ea22-4804-967e-e8a07aab07b6" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_ce262b15-5ddb-4e53-963d-5ab47541f3c0" xlink:to="loc_srt_ConsolidationItemsAxis_3acf7c1c-ea22-4804-967e-e8a07aab07b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_3acf7c1c-ea22-4804-967e-e8a07aab07b6_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_3acf7c1c-ea22-4804-967e-e8a07aab07b6" xlink:to="loc_srt_ConsolidationItemsDomain_3acf7c1c-ea22-4804-967e-e8a07aab07b6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_3707b8bf-a1c5-4352-9aa7-105d0a283d6b" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_3acf7c1c-ea22-4804-967e-e8a07aab07b6" xlink:to="loc_srt_ConsolidationItemsDomain_3707b8bf-a1c5-4352-9aa7-105d0a283d6b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_2ac97709-4779-4209-b8f2-6209b1a3e4c9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_3707b8bf-a1c5-4352-9aa7-105d0a283d6b" xlink:to="loc_us-gaap_OperatingSegmentsMember_2ac97709-4779-4209-b8f2-6209b1a3e4c9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_bf9b73f7-35bb-4ad1-b3aa-d209ce301643" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_3707b8bf-a1c5-4352-9aa7-105d0a283d6b" xlink:to="loc_us-gaap_CorporateNonSegmentMember_bf9b73f7-35bb-4ad1-b3aa-d209ce301643" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_6f8895a9-014a-4dbc-b9b9-c62e2adca8db" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_ce262b15-5ddb-4e53-963d-5ab47541f3c0" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_6f8895a9-014a-4dbc-b9b9-c62e2adca8db" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_6f8895a9-014a-4dbc-b9b9-c62e2adca8db_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6f8895a9-014a-4dbc-b9b9-c62e2adca8db" xlink:to="loc_us-gaap_SegmentDomain_6f8895a9-014a-4dbc-b9b9-c62e2adca8db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_23b3020b-09c2-44e5-a2f9-fe9528db487c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_6f8895a9-014a-4dbc-b9b9-c62e2adca8db" xlink:to="loc_us-gaap_SegmentDomain_23b3020b-09c2-44e5-a2f9-fe9528db487c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CardiopulmonarySegmentMember_64021b2a-7f0c-45a8-9970-6355982226be" xlink:href="livn-20231231.xsd#livn_CardiopulmonarySegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_23b3020b-09c2-44e5-a2f9-fe9528db487c" xlink:to="loc_livn_CardiopulmonarySegmentMember_64021b2a-7f0c-45a8-9970-6355982226be" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_NeuromodulationSegmentMember_b632aff4-4a16-4235-845a-a38d851cdba2" xlink:href="livn-20231231.xsd#livn_NeuromodulationSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_23b3020b-09c2-44e5-a2f9-fe9528db487c" xlink:to="loc_livn_NeuromodulationSegmentMember_b632aff4-4a16-4235-845a-a38d851cdba2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_AdvancedCirculatorySupportSegmentMember_77cdd7ce-c277-46c6-a7af-9c97a4b6e0f3" xlink:href="livn-20231231.xsd#livn_AdvancedCirculatorySupportSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_23b3020b-09c2-44e5-a2f9-fe9528db487c" xlink:to="loc_livn_AdvancedCirculatorySupportSegmentMember_77cdd7ce-c277-46c6-a7af-9c97a4b6e0f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_98f0b21e-776b-4ce3-a56e-118be63cea58" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_397e5edb-157e-44c3-80bd-fc85abe9e079" xlink:to="loc_us-gaap_Assets_98f0b21e-776b-4ce3-a56e-118be63cea58" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetImpairmentCharges_64e0d2f3-62db-412f-9f9a-5ade07cdae0f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_397e5edb-157e-44c3-80bd-fc85abe9e079" xlink:to="loc_us-gaap_OtherAssetImpairmentCharges_64e0d2f3-62db-412f-9f9a-5ade07cdae0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWriteDown_66cd8715-3ecf-4124-95d3-c47c3ce05a80" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryWriteDown"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_397e5edb-157e-44c3-80bd-fc85abe9e079" xlink:to="loc_us-gaap_InventoryWriteDown_66cd8715-3ecf-4124-95d3-c47c3ce05a80" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/GeographicandSegmentInformationExpendituresbySegmentDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#GeographicandSegmentInformationExpendituresbySegmentDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/GeographicandSegmentInformationExpendituresbySegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_cad256c4-82cf-44fd-a815-cb63dab50105" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2f0cbc69-4aed-4cc4-9a8b-e03c86a445a6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_cad256c4-82cf-44fd-a815-cb63dab50105" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2f0cbc69-4aed-4cc4-9a8b-e03c86a445a6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_8f2a9a4c-bd1b-4838-b574-7d20339c8130" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2f0cbc69-4aed-4cc4-9a8b-e03c86a445a6" xlink:to="loc_srt_ConsolidationItemsAxis_8f2a9a4c-bd1b-4838-b574-7d20339c8130" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_8f2a9a4c-bd1b-4838-b574-7d20339c8130_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_8f2a9a4c-bd1b-4838-b574-7d20339c8130" xlink:to="loc_srt_ConsolidationItemsDomain_8f2a9a4c-bd1b-4838-b574-7d20339c8130_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_6b4319d8-ef67-4ab3-a822-5a201207cef2" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_8f2a9a4c-bd1b-4838-b574-7d20339c8130" xlink:to="loc_srt_ConsolidationItemsDomain_6b4319d8-ef67-4ab3-a822-5a201207cef2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_19468baa-4025-48b2-9874-d01a7bae6476" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6b4319d8-ef67-4ab3-a822-5a201207cef2" xlink:to="loc_us-gaap_OperatingSegmentsMember_19468baa-4025-48b2-9874-d01a7bae6476" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_e7251ded-9ad2-49e0-8f9a-89a14c98aa18" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_6b4319d8-ef67-4ab3-a822-5a201207cef2" xlink:to="loc_us-gaap_CorporateNonSegmentMember_e7251ded-9ad2-49e0-8f9a-89a14c98aa18" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_e35fede4-4c37-4c66-b939-886afcba2a9a" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_2f0cbc69-4aed-4cc4-9a8b-e03c86a445a6" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_e35fede4-4c37-4c66-b939-886afcba2a9a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_e35fede4-4c37-4c66-b939-886afcba2a9a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_e35fede4-4c37-4c66-b939-886afcba2a9a" xlink:to="loc_us-gaap_SegmentDomain_e35fede4-4c37-4c66-b939-886afcba2a9a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_8261c9c8-6cbe-4e61-b4fc-aacb7681043c" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_e35fede4-4c37-4c66-b939-886afcba2a9a" xlink:to="loc_us-gaap_SegmentDomain_8261c9c8-6cbe-4e61-b4fc-aacb7681043c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_CardiopulmonarySegmentMember_1d538dfd-17f1-47b0-a976-2e7ada43f14c" xlink:href="livn-20231231.xsd#livn_CardiopulmonarySegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8261c9c8-6cbe-4e61-b4fc-aacb7681043c" xlink:to="loc_livn_CardiopulmonarySegmentMember_1d538dfd-17f1-47b0-a976-2e7ada43f14c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_NeuromodulationSegmentMember_051475b1-73d0-4204-b019-185dcc27234c" xlink:href="livn-20231231.xsd#livn_NeuromodulationSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8261c9c8-6cbe-4e61-b4fc-aacb7681043c" xlink:to="loc_livn_NeuromodulationSegmentMember_051475b1-73d0-4204-b019-185dcc27234c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_AdvancedCirculatorySupportSegmentMember_13b15c68-6825-47dc-b8a3-257268e45380" xlink:href="livn-20231231.xsd#livn_AdvancedCirculatorySupportSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_8261c9c8-6cbe-4e61-b4fc-aacb7681043c" xlink:to="loc_livn_AdvancedCirculatorySupportSegmentMember_13b15c68-6825-47dc-b8a3-257268e45380" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_db6b9a52-ece0-496f-a9a9-9efbff00e237" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SegmentExpenditureAdditionToLongLivedAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_cad256c4-82cf-44fd-a815-cb63dab50105" xlink:to="loc_us-gaap_SegmentExpenditureAdditionToLongLivedAssets_db6b9a52-ece0-496f-a9a9-9efbff00e237" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/GeographicandSegmentInformationPropertyPlantandEquipmentbyGeographicRegionDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#GeographicandSegmentInformationPropertyPlantandEquipmentbyGeographicRegionDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/GeographicandSegmentInformationPropertyPlantandEquipmentbyGeographicRegionDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_8275bbe2-fa4f-42df-b82e-3c52775060f0" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_7a950129-8899-4d78-874b-497140691a01" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_8275bbe2-fa4f-42df-b82e-3c52775060f0" xlink:to="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_7a950129-8899-4d78-874b-497140691a01" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_3a57273e-ab6d-4995-8f2a-56f82ea04da1" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsTable_7a950129-8899-4d78-874b-497140691a01" xlink:to="loc_srt_StatementGeographicalAxis_3a57273e-ab6d-4995-8f2a-56f82ea04da1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_3a57273e-ab6d-4995-8f2a-56f82ea04da1_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_3a57273e-ab6d-4995-8f2a-56f82ea04da1" xlink:to="loc_srt_SegmentGeographicalDomain_3a57273e-ab6d-4995-8f2a-56f82ea04da1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_22e5301c-55ff-420b-b0a3-05785f771610" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_3a57273e-ab6d-4995-8f2a-56f82ea04da1" xlink:to="loc_srt_SegmentGeographicalDomain_22e5301c-55ff-420b-b0a3-05785f771610" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_US_3e7978c7-6da7-49b5-b250-14c184381122" xlink:href="https://xbrl.sec.gov/country/2023/country-2023.xsd#country_US"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_22e5301c-55ff-420b-b0a3-05785f771610" xlink:to="loc_country_US_3e7978c7-6da7-49b5-b250-14c184381122" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_EuropeMember_b0092e59-a52f-4dc4-955a-306d431d3eb2" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_EuropeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_22e5301c-55ff-420b-b0a3-05785f771610" xlink:to="loc_srt_EuropeMember_b0092e59-a52f-4dc4-955a-306d431d3eb2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_LocationsExcludingTheUnitedStatesAndEuropeMember_e4506417-b424-4a56-ba1b-39f124d43c58" xlink:href="livn-20231231.xsd#livn_LocationsExcludingTheUnitedStatesAndEuropeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_22e5301c-55ff-420b-b0a3-05785f771610" xlink:to="loc_livn_LocationsExcludingTheUnitedStatesAndEuropeMember_e4506417-b424-4a56-ba1b-39f124d43c58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_9c531fa3-347b-4c90-85a0-e4c2a7132817" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_8275bbe2-fa4f-42df-b82e-3c52775060f0" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_9c531fa3-347b-4c90-85a0-e4c2a7132817" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/SupplementalFinancialInformationPropertyPlantandEquipmentDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#SupplementalFinancialInformationPropertyPlantandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/SupplementalFinancialInformationPropertyPlantandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_2f7734a7-4fe5-4208-94fa-8ee477b945ea" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_88e8f7d9-a26e-4dd7-8eb2-f24fa203f801" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_2f7734a7-4fe5-4208-94fa-8ee477b945ea" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_88e8f7d9-a26e-4dd7-8eb2-f24fa203f801" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ab814481-b0f9-4444-8eb3-b5dd16d06ad5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_88e8f7d9-a26e-4dd7-8eb2-f24fa203f801" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ab814481-b0f9-4444-8eb3-b5dd16d06ad5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ab814481-b0f9-4444-8eb3-b5dd16d06ad5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ab814481-b0f9-4444-8eb3-b5dd16d06ad5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_ab814481-b0f9-4444-8eb3-b5dd16d06ad5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a85160db-d256-4df4-90fc-298281d019b9" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_ab814481-b0f9-4444-8eb3-b5dd16d06ad5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a85160db-d256-4df4-90fc-298281d019b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandMember_7c17306d-2f15-4488-81f9-d3118b8b50e6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LandMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a85160db-d256-4df4-90fc-298281d019b9" xlink:to="loc_us-gaap_LandMember_7c17306d-2f15-4488-81f9-d3118b8b50e6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_a5a0276c-099b-4419-9a7f-6f57d04acd3f" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BuildingAndBuildingImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a85160db-d256-4df4-90fc-298281d019b9" xlink:to="loc_us-gaap_BuildingAndBuildingImprovementsMember_a5a0276c-099b-4419-9a7f-6f57d04acd3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_EquipmentSoftwareFurnitureAndFixturesMember_fa6e0504-529e-4811-82c1-41aebb25e215" xlink:href="livn-20231231.xsd#livn_EquipmentSoftwareFurnitureAndFixturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a85160db-d256-4df4-90fc-298281d019b9" xlink:to="loc_livn_EquipmentSoftwareFurnitureAndFixturesMember_fa6e0504-529e-4811-82c1-41aebb25e215" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_5a18e8ae-28a2-4ffa-a231-647abce10da2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a85160db-d256-4df4-90fc-298281d019b9" xlink:to="loc_us-gaap_OtherCapitalizedPropertyPlantAndEquipmentMember_5a18e8ae-28a2-4ffa-a231-647abce10da2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ConstructionInProgressMember_1d79b585-9c0d-4e91-b5c5-2224fb85dbd2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ConstructionInProgressMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_a85160db-d256-4df4-90fc-298281d019b9" xlink:to="loc_us-gaap_ConstructionInProgressMember_1d79b585-9c0d-4e91-b5c5-2224fb85dbd2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_c3c1ca6d-3f8a-451b-b92a-71d78e7045da" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_88e8f7d9-a26e-4dd7-8eb2-f24fa203f801" xlink:to="loc_srt_RangeAxis_c3c1ca6d-3f8a-451b-b92a-71d78e7045da" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c3c1ca6d-3f8a-451b-b92a-71d78e7045da_default" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_c3c1ca6d-3f8a-451b-b92a-71d78e7045da" xlink:to="loc_srt_RangeMember_c3c1ca6d-3f8a-451b-b92a-71d78e7045da_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f958cfca-43aa-4f29-9190-d223b8265fcc" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_c3c1ca6d-3f8a-451b-b92a-71d78e7045da" xlink:to="loc_srt_RangeMember_f958cfca-43aa-4f29-9190-d223b8265fcc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_51d387d8-0fdd-4800-ad6b-6f81d8245005" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f958cfca-43aa-4f29-9190-d223b8265fcc" xlink:to="loc_srt_MinimumMember_51d387d8-0fdd-4800-ad6b-6f81d8245005" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_90bb0241-a39f-4153-ad24-8cc9018e619a" xlink:href="https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_f958cfca-43aa-4f29-9190-d223b8265fcc" xlink:to="loc_srt_MaximumMember_90bb0241-a39f-4153-ad24-8cc9018e619a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_d72fd8c9-69d0-493a-8863-78405a78021b" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_2f7734a7-4fe5-4208-94fa-8ee477b945ea" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_d72fd8c9-69d0-493a-8863-78405a78021b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_e2ecd6b0-6611-424a-a7fc-d332f78e51f6" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_2f7734a7-4fe5-4208-94fa-8ee477b945ea" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_e2ecd6b0-6611-424a-a7fc-d332f78e51f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_ad34ecdf-45b3-4a20-b9a5-1ef500569ef5" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_2f7734a7-4fe5-4208-94fa-8ee477b945ea" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_ad34ecdf-45b3-4a20-b9a5-1ef500569ef5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_7c9361dc-6b98-4c6c-9a3f-7819e8c66cde" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_2f7734a7-4fe5-4208-94fa-8ee477b945ea" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_7c9361dc-6b98-4c6c-9a3f-7819e8c66cde" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.livanova.cyberonics.com/role/SupplementalFinancialInformationForeignExchangeandOtherGainsLossesDetails" xlink:type="simple" xlink:href="livn-20231231.xsd#SupplementalFinancialInformationForeignExchangeandOtherGainsLossesDetails"/>
  <link:definitionLink xlink:role="http://www.livanova.cyberonics.com/role/SupplementalFinancialInformationForeignExchangeandOtherGainsLossesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a403d41a-b52f-4173-ba3c-f1e59509c2f3" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_9c81508f-9e9c-4629-ade1-07d174a93d49" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a403d41a-b52f-4173-ba3c-f1e59509c2f3" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_9c81508f-9e9c-4629-ade1-07d174a93d49" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_ebf950f1-acec-4a06-9745-ccff009dbc10" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByAssetClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_9c81508f-9e9c-4629-ade1-07d174a93d49" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_ebf950f1-acec-4a06-9745-ccff009dbc10" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_ebf950f1-acec-4a06-9745-ccff009dbc10_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_ebf950f1-acec-4a06-9745-ccff009dbc10" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_ebf950f1-acec-4a06-9745-ccff009dbc10_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_67f0888e-50b1-4d66-a60c-ff460affe659" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_ebf950f1-acec-4a06-9745-ccff009dbc10" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_67f0888e-50b1-4d66-a60c-ff460affe659" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFinancialInstrumentsAssetsMember_3f3a94e9-0395-4bb5-b703-c0d9adb2bb68" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeFinancialInstrumentsAssetsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_67f0888e-50b1-4d66-a60c-ff460affe659" xlink:to="loc_us-gaap_DerivativeFinancialInstrumentsAssetsMember_3f3a94e9-0395-4bb5-b703-c0d9adb2bb68" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByLiabilityClassAxis_e6c5457a-657c-4598-8465-a881e619ad30" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueByLiabilityClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_9c81508f-9e9c-4629-ade1-07d174a93d49" xlink:to="loc_us-gaap_FairValueByLiabilityClassAxis_e6c5457a-657c-4598-8465-a881e619ad30" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_e6c5457a-657c-4598-8465-a881e619ad30_default" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_e6c5457a-657c-4598-8465-a881e619ad30" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_e6c5457a-657c-4598-8465-a881e619ad30_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_42cdec69-d4cf-4c2c-bcff-5d5fcfbef8c8" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByLiabilityClassAxis_e6c5457a-657c-4598-8465-a881e619ad30" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_42cdec69-d4cf-4c2c-bcff-5d5fcfbef8c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_c267946b-0c22-4558-b102-bc95c06a9049" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_42cdec69-d4cf-4c2c-bcff-5d5fcfbef8c8" xlink:to="loc_us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember_c267946b-0c22-4558-b102-bc95c06a9049" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_EmbeddedExchangeFeatureLiabilityMember_6a377f29-43c7-4f31-b0fa-9d1bd2622ce5" xlink:href="livn-20231231.xsd#livn_EmbeddedExchangeFeatureLiabilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_42cdec69-d4cf-4c2c-bcff-5d5fcfbef8c8" xlink:to="loc_livn_EmbeddedExchangeFeatureLiabilityMember_6a377f29-43c7-4f31-b0fa-9d1bd2622ce5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueAdjustment_c6d11835-14e3-45bb-87b2-f86e2eb57412" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesFairValueAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a403d41a-b52f-4173-ba3c-f1e59509c2f3" xlink:to="loc_us-gaap_LiabilitiesFairValueAdjustment_c6d11835-14e3-45bb-87b2-f86e2eb57412" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueAdjustment_04c54369-96c4-4bb0-b8ec-ba80626a0f46" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AssetsFairValueAdjustment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a403d41a-b52f-4173-ba3c-f1e59509c2f3" xlink:to="loc_us-gaap_AssetsFairValueAdjustment_04c54369-96c4-4bb0-b8ec-ba80626a0f46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterest_731b085d-36ba-4d32-99f5-c63e3914ab21" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentIncomeInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a403d41a-b52f-4173-ba3c-f1e59509c2f3" xlink:to="loc_us-gaap_InvestmentIncomeInterest_731b085d-36ba-4d32-99f5-c63e3914ab21" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_5101ab19-5e75-4a94-9f46-48f76f729c00" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a403d41a-b52f-4173-ba3c-f1e59509c2f3" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_5101ab19-5e75-4a94-9f46-48f76f729c00" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeDividend_1a51e085-65bc-4fc2-b298-e70dc022fe50" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InvestmentIncomeDividend"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a403d41a-b52f-4173-ba3c-f1e59509c2f3" xlink:to="loc_us-gaap_InvestmentIncomeDividend_1a51e085-65bc-4fc2-b298-e70dc022fe50" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossOnInvestments_85fd582a-7274-42bd-b25d-d8e745a721d2" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnInvestments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a403d41a-b52f-4173-ba3c-f1e59509c2f3" xlink:to="loc_us-gaap_GainLossOnInvestments_85fd582a-7274-42bd-b25d-d8e745a721d2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingGainsLosses_514b0be4-c891-4060-becc-4eb399ff9580" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_OtherNonoperatingGainsLosses"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a403d41a-b52f-4173-ba3c-f1e59509c2f3" xlink:to="loc_us-gaap_OtherNonoperatingGainsLosses_514b0be4-c891-4060-becc-4eb399ff9580" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ForeignCurrencyTransactionGainLossAndOtherNonoperatingIncome_428e42c1-21b2-4d10-b7d9-c9b88a001dee" xlink:href="livn-20231231.xsd#livn_ForeignCurrencyTransactionGainLossAndOtherNonoperatingIncome"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_a403d41a-b52f-4173-ba3c-f1e59509c2f3" xlink:to="loc_livn_ForeignCurrencyTransactionGainLossAndOtherNonoperatingIncome_428e42c1-21b2-4d10-b7d9-c9b88a001dee" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-roles-2023.xsd#eedm"/>
  <link:definitionLink xlink:role="http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeStatementAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ResearchAndDevelopmentExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementAbstract" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_LiabilitiesCurrentAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/AwardTypeOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2023/ecd-2023.xsd#AwardTypeOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/ecd/AwardTypeOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_OtherThanOptionAwardsMember_f0dff066-db5c-4216-ba34-4e187b38d35a" xlink:href="livn-20231231.xsd#livn_OtherThanOptionAwardsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_livn_OtherThanOptionAwardsMember_f0dff066-db5c-4216-ba34-4e187b38d35a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_MarketbasedPerformanceRestrictedStockUnitsMember_4c912fb0-a153-49bd-a42d-728ef47442d0" xlink:href="livn-20231231.xsd#livn_MarketbasedPerformanceRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_livn_MarketbasedPerformanceRestrictedStockUnitsMember_4c912fb0-a153-49bd-a42d-728ef47442d0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_6a771831-27aa-4e0b-9a7f-941d8e57cc8d" xlink:href="livn-20231231.xsd#livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_livn_PerformanceBasedRestrictedShareAndRestrictedShareUnitMember_6a771831-27aa-4e0b-9a7f-941d8e57cc8d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeStockMember" xlink:href="https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EmployeeStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_us-gaap_EmployeeStockMember" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ServiceBasedRestrictedStockUnitsMember_9184483a-b86e-49cc-a4a5-90f4b72fc6de" xlink:href="livn-20231231.xsd#livn_ServiceBasedRestrictedStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_livn_ServiceBasedRestrictedStockUnitsMember_9184483a-b86e-49cc-a4a5-90f4b72fc6de" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_livn_ServiceBasedStockAppreciationRightsMember_0b6b6f12-d693-4fff-8e19-711c09ea6b99" xlink:href="livn-20231231.xsd#livn_ServiceBasedStockAppreciationRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_livn_ServiceBasedStockAppreciationRightsMember_0b6b6f12-d693-4fff-8e19-711c09ea6b99" xlink:type="arc" order="9"/>
  </link:definitionLink>
</link:linkbase>
