vapor

Other spellings

• vapour (UK)

Pronunciation

• Audio (US)

  (file)

Noun

Singular vapor

Plural vapors

1. (countable) A vapor is a cloudy or other matter in the air, like mist, steam or fumes.
2. (uncountable) Vapor is the gas of something that used to be liquid or solid.

   When you heat up water, vapor appears.

Related words

• vaporous
• vaporize
• water vapor