This often attracts attention among online conspiracy theorists, who falsely claim that condensation trails in the sky – water vapour created from aircraft jet engines – is evidence of sinister large-scale …

VAPOUR definition: 1. gas or extremely small drops of liquid that result from the heating of a liquid or solid: 2. a…. Learn more.

The meaning of VAPOUR is chiefly British spelling of vapor.

Vapor refers to a gas phase at a temperature where the same substance can also exist in the liquid or solid state, below the critical temperature of the substance. (For example, water has a critical …

Vapour consists of tiny drops of water or other liquids in the air, which appear as mist. ...water vapour.

2. mist, fumes or smoke in the air. Near the marshes the air was filled with a strange-smelling vapour. vapor

Nov 1, 2025 · vapour (countable and uncountable, plural vapours) British standard spelling of vapor.

Definition of vapour noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Meteorology a visible mass of tiny particles, as fog, mist, or smoke, floating or hanging in the air: [countable] the vapors rising from the bog. [uncountable] clouds of vapor. Physics a substance that …

to cause to rise or pass off in, or as if in, vapor; vaporize. Archaic. to affect with the vapors; depress. to rise or pass off in the form of vapor. to emit vapor or exhalations. to talk or act grandiloquently, …