Meaning of “vapor” in the English Dictionary

American

"vapor" in American English

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vapornoun [ C/U ]

Cdn Br vapour us /ˈveɪ·pər/

chemistry a gas that escapes from a liquid or solid, esp. as a result of heating:

[ U ] Warm air is able to hold more water vapor than cold air.

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