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water vapor

water vapor

23 2.7
Gas that comes from water and floats in the air
  • noun
  • /ˈwɔːtər ˈveɪpər/
  • Specialized
translation icon : vapor de agua
  • When the temperature goes up, the water vapor coming off the oceans into the sky is increasing significantly.
  • atmospheric water vapor
  • water vapor in the air
  • water vapor in the atmosphere

They think they're just vaping flavors and water vapor, which of course is not true.

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Examples

  • Dew point is a direct measure of how much water vapor is in the air.

  • Meteorologists use satellite images to track changes in water vapor that affect weather patterns.

  • But warm air can hold more water vapour than cold air.

  • Those are probably liquid as a result of adding water vapor to cold air.

  • The one at the top is showing you the trend in the water vapor in the atmosphere.

  • For example, warmer air can hold more water vapor than cooler air.

  • The most important of these gases are water vapor and CO2.

    Academic text (1997)
  • Water vapor is often funneled thousands of kilometers from the oceans over the land, and then much more of it falls at the same time.

  • As the water is heated, it forms water vapor, which condenses on the pane.

    Academic text (1998)
  • Cloud droplets form on aerosol particles in the atmosphere, which act as sites for water vapor condensation.

    Academic text (1994)

Synonyms

steam
vswater vapor
342 1.0

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

occurs at lower temperatures rather than forming in boiling
vapor
vswater vapor
  • US
96 3.2

Gas or very small drops of liquid in the air, like steam

refers specifically to a liquid's gas form rather than any airborne substance

Antonyms

259 1.0

Flowing and not solid, like water when warm

How Humid

water vapor
  • Specialized
23 2.7
humid
45 1.0
damp
11 1.0
air-dry
  • Specialized
4.1

Surface Forms

water vapor singular
water vapors plural

Morphology

water + vapor

The meaning 'water in the form of a gas' is directly derivable from combining 'water' (H₂O) and 'vapor' (a gas or tiny droplets); the compound transparently names the gaseous form of water. This compositional noun-noun compound is common in scientific vocabulary and across languages, so a B1 learner who knows both constituents should understand it.

Etymology

Water vapor comes from the clear image of water turning into vapor: think of steam rising from a kettle and mixing into the air. That invisible steam is 'water in the form of a gas', so water vapor means water present as a gas in the air.