INVALIDATE


Meaning of INVALIDATE in English

[ ɪn'valɪdeɪt ]

■ verb

1》 make or prove (an argument, theory, etc.) unsound or erroneous.

2》 make (an official document or procedure) no longer legally valid.

Derivatives

invalidation noun

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.