fog up - definition in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online (US)

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English definition of “fog up”

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fog up

phrasal verb with fog uk   /fɒɡ/  us   /fɑːɡ/ verb [T] (-gg-)
If a glass surface fogs up, a thin layer of liquid develops on it so that it is difficult to see through: I couldn't see a thing because my glasses had fogged up.
Translations of “fog up”
in Chinese (Traditional) 布滿霧氣,蒙上霧…
in Chinese (Simplified) 布满雾气,蒙上雾…
(Definition of fog up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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