Meaning of “invalidate” in the English Dictionary

"invalidate" in British English

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(Definition of “invalidate” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"invalidate" in American English

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invalidateverb [ T ]

us /ɪnˈvæl·ɪˌdeɪt/

to make something not true, or to make something unacceptable:

A few minor factual errors should not invalidate the theory.

(Definition of “invalidate” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"invalidate" in Business English

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invalidateverb [ T ]

uk /ɪnˈvælɪdeɪt/ us

to officially stop a document, contract, etc. being legally or officially acceptable:

If you do not go to an approved garage, you are likely to invalidate a warranty on a new car.
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invalidation
noun [ U ]

The error led to the invalidation of American scores on an international test.

(Definition of “invalidate” from the Cambridge Business English Dictionary © Cambridge University Press)