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vapor

vapor

96 3.2
Gas or very small drops of liquid in the air, like steam
  • noun
  • /ˈveɪpər/
  • US
translation icon : vapor
  • The heavy ceramic door hissed open, traces of vapor rising from the cold metal fittings beyond.
  • water vapor
  • vapor in the air
  • condensation of water vapor

It condensed the vapor from that water in my exhaled breath.

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Examples

  • Small puffs of exhaust came from the Mustang's tailpipe like vapor from the nose of a horse.

    Fiction book (1993)
  • Some of the atmospheric water vapor condenses and falls as snow, adding to the mass of the ice.

    Academic text (2011)
  • Do you see the vapor trail over there?

  • This is how you get the vapor into the bottles.

  • Yes, I was wondering whether airplane vapor trails were part of the models.

  • So cold he could see the vapor from his mouth when he breathed.

    Fiction book (1994)
  • Their breath rose in a steamy vapor to mingle with the smoke.

    Fiction book (1991)
  • When cool water is exposed to an extremely hot surface, a layer of water vapor, which is a relatively poor heat conductor, provides a thin protective barrier.

  • Then he struck ice, and a vapor cloud billowed out of the shaft, obscuring his view.

    Fiction book (1994)
  • When water boils and steams into a vapor, it changes phases from liquid to gas.

Synonyms

steam
vsvapor
342 1.0

Water in the air as an invisible hot gas rising from boiling water

is a general airborne substance not limited to forms made by boiling
mist
vsvapor
115 1.0

A thin fog near the ground that makes it hard to see

is a broader airborne form that can be gas or tiny droplets
water vapor
vsvapor
  • Specialized
23 2.7

Gas that comes from water and floats in the air

is a general term for any substance in air as gas or tiny drops

Compounds

water vapor
  • Specialized
23 2.7

Gas that comes from water and floats in the air

vapor lock
  • Specialized
1 7.4

A stop in the fuel moving to a car engine because heat makes gas bubbles

vapor pressure
  • Specialized
1 6.0

The push of gas above a liquid in a closed container

mercury-vapor lamp
  • Specialized
6.5

A bright electric lamp that makes bluish light often used for streets and large indoor places

sodium-vapor lamp
  • Specialized
5.4

A light that gives a strong yellow glow often used for street lighting

5.1

The release of steam or gas from a closed space into the air

5.1

A hot room filled with steam for cleaning and relaxing the body

vapor density
  • Specialized
7.5

How heavy a gas is compared to hydrogen at the same temperature and pressure

How Dense

fog
155 1.0
mist
115 1.0
haze
41 3.4
vapor
  • US
96 3.2
steam
342 1.0

Surface Forms

vapor singular
vapors plural
vapours plural
vapour singular

Etymology

Vapor comes from the Latin word vapor meaning 'steam' or warm air rising from water. Think of the steam from a kettle — that rising mist is why vapor means tiny drops or gas in the air, and you can see the same root in evaporate ('to turn into vapor').