- Vapor is a gas or moisture floating in the air.
An example of vapor is fog.
- Vapor is defined as to give off gas or water moisture.
An example of vapor is for water to give off steam when it boils.
Fog is an example of vapor.
- 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
- exhalations from the stomach believed to be harmful to one's health
- hypochondria or depressed spirits: often with the
Origin of vaporMiddle English vapour ; from Anglo-French ; from Middle French vapeur ; from Classical Latin vapor ; from Indo-European base an unverified form wep-, to give off vapors
- to rise or pass off in the form of vapor; evaporate
- to give off vapor
- to indulge in idle talk or boasting
- The gaseous state of a substance that is liquid or solid at room temperature.
- A faintly visible suspension of fine particles of matter in the air, as mist, fumes, or smoke.
- A mixture of fine droplets of a substance and air, as the fuel mixture of 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.
verbva·pored, va·por·ing, va·pors
- To fill or cover with vapor: Perfume vapored the room.
- To vaporize: “You wished you'd seen one of the monster shots that vapored an atoll way back when” (Don DeLillo).
- To give off vapor.
- To evaporate: The fog vapored away.
- To engage in idle, boastful talk: vapored on about his accomplishments.
Origin of vaporMiddle English vapour, from Anglo-Norman, from Latin vapor.
(third-person singular simple present vapors, present participle vaporing, simple past and past participle vapored)
From Latin vapor (“steam, heat”).