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English definition of “invalidity”

invalidity

noun [U] (NOT OFFICIAL)    /ˌɪn.vəˈlɪd.ɪ.ti/ US  /-ə.t̬i/
the condition of not being legally or officially acceptableFaults and mistakes
(Definition of invalidity noun (NOT OFFICIAL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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