impervious Meaning in the Cambridge English Dictionary
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Meaning of “impervious” in the English Dictionary

"impervious" in British English

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imperviousadjective

uk   /ɪmˈpɜː.vi.əs/  us   /-ˈpɝː-/

impervious adjective (SUBSTANCE)

specialized geology, engineering not ​allowingliquid to go through: How does ​gluebond with impervious ​substances like ​glass and ​metal?

impervious adjective (PERSON)

If someone is impervious to something,they are not ​influenced or ​affected by something: He is impervious tocriticism and ​rationalargument.
(Definition of impervious from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"impervious" in American English

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imperviousadjective

 us   /ɪmˈpɜr·vi·əs/
not ​able to be ​influenced, ​hurt, or ​damaged: He ​seems to be impervious to ​pain. Granite is ​almost impervious to acid-rain ​damage.
(Definition of impervious from the Cambridge Academic Content Dictionary © Cambridge University Press)
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