vapour

Từ điển Oxford Advanced Learner 8th

va·pour [vapour vapours vapoured vapouring] (especially US vapor)BrE [ˈveɪpə(r)] NAmE [ˈveɪpər] noun countable, uncountable
a mass of very small drops of liquid in the air, for example steam
•water vapour
See also: ↑vapor

Word Origin:
late Middle English: from Old French, or from Latin vapor ‘steam, heat’.

Example Bank:
•The particles then form a vapour.
•There was a hissing sound, and clouds of vapour were emitted.

• Từ đồng nghĩa / Synonyms:
  vaporization, vaporisation, vapor, evaporation