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English definition of “invalidity”

invalidity

noun [U] uk   /ˌɪn.vəˈlɪd.ɪ.ti/ us    /-ə.t̬i/

invalidity noun [U] (NOT OFFICIAL)

the condition of not being legally or officially acceptableFaults and mistakes

invalidity noun [U] (ILLNESS)

the condition of being too ill to work or care for yourselfHandicap and the disabled
(Definition of invalidity from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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