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<link:definition>1013 - Disclosure - Intangible Assets</link:definition>
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<link:definition>1014 - Disclosure -  Plant and Equipment</link:definition>
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<link:definition>1015 - Disclosure - Prepaids and Other Current Assets</link:definition>
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<link:definition>1016 - Disclosure - Reporting Segment and Geographic Information</link:definition>
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<link:definition>1018 - Disclosure - Common and Preferred Stock</link:definition>
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<link:definition>1019 - Disclosure - Revenues</link:definition>
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<link:definition>1020 - Disclosure - Share-Based Payment Plans</link:definition>
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<link:definition>1021 - Disclosure - Income Taxes</link:definition>
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<link:definition>1022 - Disclosure -  Net Loss per Share</link:definition>
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<link:definition>1023 - Disclosure - Retirement Plans</link:definition>
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<link:definition>1024 - Disclosure - Subsequent Events</link:definition>
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<link:definition>1025 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
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<link:definition>1026 - Disclosure - Leases (Tables)</link:definition>
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<link:definition>1027 - Disclosure - Inventory (Tables)</link:definition>
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<link:definition>1028 - Disclosure - Intangible Assets (Tables)</link:definition>
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<link:definition>1029 - Disclosure -  Plant and Equipment (Tables)</link:definition>
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<link:definition>1030 - Disclosure - Prepaids and Other Current Assets (Tables)</link:definition>
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<link:definition>1031 - Disclosure - Reporting Segment and Geographic Information (Tables)</link:definition>
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<link:definition>1032 - Disclosure - Share-Based Payment Plans (Tables)</link:definition>
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<link:definition>1033 - Disclosure -  Net Loss per Share (Tables)</link:definition>
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<link:definition>1034 - Disclosure - The Company - Additional Information (Detail)</link:definition>
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<link:definition>1035 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail)</link:definition>
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<link:definition>1036 - Disclosure - Leases - Additional Information (Detail)</link:definition>
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<link:definition>1037 - Disclosure - Leases - Summary Of Lease Cost (Detail)</link:definition>
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<link:definition>1038 - Disclosure - Leases - Summary Of Supplemental Cash Flow Information Related To Operating Leases (Detail)</link:definition>
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<link:definition>1039 - Disclosure - Leases - Summary Of Supplemental Balance Sheet Information Related To Operating Leases (Detail)</link:definition>
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<link:definition>1041 - Disclosure - Inventory - Summary Of Composition Of Inventory (Detail)</link:definition>
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<link:definition>1042 - Disclosure - Inventory - Additional Information (Detail)</link:definition>
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<link:definition>1043 - Disclosure - Intangible Assets - Summary Of Composition Of Intangible Assets (Detail)</link:definition>
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<link:definition>1046 - Disclosure -  Plant and Equipment - Summary Of Composition Of Property, Plant And Equipment (Detail)</link:definition>
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<link:roleType roleURI="http://Avitamedical.com/role/PlantAndEquipmentAdditionalInformationDetail" id="PlantAndEquipmentAdditionalInformationDetail">
<link:definition>1047 - Disclosure -  Plant and Equipment - Additional Information (Detail)</link:definition>
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<link:definition>1048 - Disclosure - Prepaids and Other Current Assets - Schedule Of Prepaids And Other Current Assets (Detail)</link:definition>
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<link:definition>1049 - Disclosure - Reporting Segment and Geographic Information - Schedule Of Revenue By Region (Details)</link:definition>
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<link:definition>1050 - Disclosure - Contingencies - Additional Information (Detail)</link:definition>
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<link:definition>1051 - Disclosure - Common and Preferred Stock - Additional Information (Detail)</link:definition>
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<link:usedOn>link:definitionLink</link:usedOn>
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<link:definition>1052 - Disclosure - Revenue - Additional Information (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
<link:usedOn>link:calculationLink</link:usedOn>
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<link:roleType roleURI="http://Avitamedical.com/role/ShareBasedPaymentPlansAdditionalInformationDetail" id="ShareBasedPaymentPlansAdditionalInformationDetail">
<link:definition>1053 - Disclosure - Share-Based Payment Plans - Additional Information (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
<link:usedOn>link:calculationLink</link:usedOn>
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<link:roleType roleURI="http://Avitamedical.com/role/ShareBasedPaymentPlansSummaryOfStockBasedCompensationIsReflectedInTheStatementsOfOperationsDetail" id="ShareBasedPaymentPlansSummaryOfStockBasedCompensationIsReflectedInTheStatementsOfOperationsDetail">
<link:definition>1054 - Disclosure - Share-Based Payment Plans - Summary Of Stock-based Compensation Is Reflected In The Statements Of Operations (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
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<link:roleType roleURI="http://Avitamedical.com/role/ShareBasedPaymentPlansSummaryOfStockOptionActivityDetail" id="ShareBasedPaymentPlansSummaryOfStockOptionActivityDetail">
<link:definition>1055 - Disclosure - Share-Based Payment Plans - Summary Of Stock Option Activity (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
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<link:definition>1056 - Disclosure - Share-Based Payment Plans - Summary Of Company Unvested Shares (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
<link:usedOn>link:calculationLink</link:usedOn>
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<link:roleType roleURI="http://Avitamedical.com/role/IncomeTaxesAdditionalInformationDetail" id="IncomeTaxesAdditionalInformationDetail">
<link:definition>1057 - Disclosure - Income Taxes - Additional Information (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
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<link:roleType roleURI="http://Avitamedical.com/role/NetLossPerShareSummaryOfReconciliationOfTheBasicAndDilutedLossPerShareDetail" id="NetLossPerShareSummaryOfReconciliationOfTheBasicAndDilutedLossPerShareDetail">
<link:definition>1058 - Disclosure - Net Loss per Share - Summary of Reconciliation of The Basic And Diluted Loss Per Share (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
<link:usedOn>link:calculationLink</link:usedOn>
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<link:roleType roleURI="http://Avitamedical.com/role/RetirementPlansAdditionalInformationDetail" id="RetirementPlansAdditionalInformationDetail">
<link:definition>1059 - Disclosure - Retirement Plans - Additional Information (Detail)</link:definition>
<link:usedOn>link:presentationLink</link:usedOn>
<link:usedOn>link:definitionLink</link:usedOn>
<link:usedOn>link:calculationLink</link:usedOn>
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<element name="TaxCutAndJobsActMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="rcel_TaxCutAndJobsActMember" substitutionGroup="xbrli:item" />
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