vapor
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
intransitive verb
- to rise or pass off in the form of vapor; evaporate
- to give off vapor
- to indulge in idle talk or boasting
See vapor in American Heritage Dictionary 4
(vāˈpər)
noun- Barely visible or cloudy diffused matter, such as mist, fumes, or smoke, suspended in the air.
a. The state of a substance that exists below its critical temperature and that may be liquefied by application of sufficient pressure.
b. The gaseous state of a substance that is liquid or solid under ordinary conditions.
a. The vaporized form of a substance for use in industrial, military, or medical processes.
b. A mixture of a vapor and air, as the explosive gasoline-air mixture burned in an internal-combustion engine.
- Archaic
a. Something insubstantial, worthless, or fleeting.
b. A fantastic or foolish idea.
- vapors Archaic
a. Exhalations within a bodily organ, especially the stomach, supposed to affect the mental or physical condition. Used with the.
b. A nervous disorder such as depression or hysteria. Used with the.
verb va·pored,
va·por·ing,
va·pors verb, transitive To vaporize.
verb, intransitive- To give off vapor.
- To evaporate.
- To engage in idle, boastful talk.
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