vapor
vapor definition
va·por (vā′pər)
noun
- visible particles of moisture floating in the air, as fog, mist, or steam
- any cloudy or imperceptible exhalation, as smoke or noxious fumes
- the gaseous form of any substance which is usually a liquid or a solid
- any substance vaporized for use in machinery, medical therapy, etc.
- a mixture of such a vaporized substance with air, as the explosive mixture in an automotive cylinder
- Now Rare anything insubstantial or worthless
- Archaic
- exhalations from the stomach believed to be harmful to one's health
- hypochondria or depressed spirits: often with the
Etymology: ME vapour < Anglo-Fr < MFr vapeur < L vapor < IE base *wep-, to give off vapors
intransitive verb
- to rise or pass off in the form of vapor; evaporate
- to give off vapor
- to indulge in idle talk or boasting
transitive verb
Browse dictionary definitions near vapor
Also Mentioned In