waterproof Definition in Cambridge British English Dictionary
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Definition of "waterproof" - British English Dictionary

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waterproofadjective

uk   /ˈwɔː.tə.pruːf/  us   /ˈwɑː.t̬ɚ-/
B2 not allowing water to go through: Canvas boots are all right but they're not as waterproof as leather.
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waterproofverb [T]

uk   /ˈwɔː.tə.pruːf/  us   /ˈwɑː.t̬ɚ-/
to put a special substance on the surface of something that will prevent water from going through it

waterproofnoun [C]

uk   /ˈwɔː.tə.pruːf/  us   /ˈwɑː.t̬ɚ-/ mainly UK
a coat or other piece of clothing that keeps you dry because it does not allow water in
Translations of “waterproof”
in Korean 방수의…
in Arabic مُضادّ لِلماء…
in Portuguese impermeável, à prova d’água…
in Catalan impermeable…
in Japanese 防水(性)の…
in Italian impermeabile…
in Chinese (Traditional) 防水的,不透水的…
in Russian непромокаемый…
in Turkish su geçirmez…
in Chinese (Simplified) 防水的,不透水的…
in Polish nieprzemakalny…
(Definition of waterproof from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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