invalidate

Word family  noun validity ≠ invalidity adjective valid ≠ invalid verb validate ≠ invalidate

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++in·val·i·date /ɪnˈvælədeɪt/ ●○○ AWL verb [transitive]  1  USE somethingto make a document, ticket, claim etc no longer legally or officially acceptable 使无效，使作废 Failure to disclose all relevant changes may invalidate your policy. 未能披露所有的相关变化会令保单无效。2  WRONG/INCORRECTto show that something such as a belief or explanation is wrong 证明〔信念、解释等〕错误 Later findings invalidated the theory. 后来的发现推翻了这一理论。→ See Verb table

Examples from the Corpus

invalidate• If we look closely at Professor Thomson's argument, we see that his conclusion is invalidated by a number of factual errors.• None of the more recent views invalidates Hahnemann's original discoveries or teachings.• The elements of Christianity that come from older beliefs do not necessarily invalidate the religion.• The Educational Testing Service invalidated the scores of 18 students.From Longman Business Dictionaryinvalidatein‧val‧i‧date /ɪnˈvælədeɪt/ verb [transitive] LAW to make a contract, agreement, document etc invalidFailure to follow the instructions correctly could invalidate the guarantee.The Judge’s ruling invalidated the company’s patent. —invalidation noun [uncountable]The Court of Appeals refused to reconsider its previous invalidation of the contract.→ See Verb table

in·val·i·date verbChineseSyllable  

etc claim a Corpus no ticket, document, make Business to

invalidate
in‧val‧i‧date AC /ɪnˈvælədeɪt, ɪnˈvælɪdeɪt/ verb [transitive]1. to make a document, ticket, claim etc no longer legally or officially acceptable:
    Failure to disclose all relevant changes may invalidate your policy.
2. to show that something such as a belief or explanation is wrong:
    Later findings invalidated the theory.

in·vali·date AW BrE /ɪnˈvælɪdeɪt/ 🔊NAmE /ɪnˈvælɪdeɪt/ 🔊 verbpresent simple - I / you / we / they invalidate BrE /ɪnˈvælɪdeɪt/ 🔊 NAmE /ɪnˈvælɪdeɪt/ 🔊present simple - he / she / it invalidates BrE /ɪnˈvælɪdeɪts/ 🔊 NAmE /ɪnˈvælɪdeɪts/ 🔊past simple invalidated BrE /ɪnˈvælɪdeɪtɪd/ 🔊 NAmE /ɪnˈvælɪdeɪtɪd/ 🔊past participle invalidated BrE /ɪnˈvælɪdeɪtɪd/ 🔊 NAmE /ɪnˈvælɪdeɪtɪd/ 🔊 -ing form invalidating BrE /ɪnˈvælɪdeɪtɪŋ/ 🔊 NAmE /ɪnˈvælɪdeɪtɪŋ/ 🔊~ sth to prove that an idea, a story, an argument, etc. is wrong 证明…错误；使站不住脚◆This new piece of evidence invalidates his version of events. 这条新证据推翻了他对事件经过的说法。🔊🔊~ sth if you invalidate a document, a contract, an election, etc., you make it no longer legally or officially valid or acceptable 使无效；使作废 OPP validate ▸ in·vali·da·tion BrE /ɪnˌvælɪˈdeɪʃn/ 🔊NAmE /ɪnˌvælɪˈdeɪʃn/ 🔊 noun [uncountable]