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water vapour

British  

noun

  1. water in the gaseous state, esp when due to evaporation at a temperature below the boiling point Compare steam

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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As the Sun heats the ground, the water vapour suddenly condenses.

From Barron's Jul. 27, 2026

It starts off as a cute little white cloud -- a cumulus cloud, which is formed because water vapour has turned into tiny droplets.

From Barron's Jul. 27, 2026

As sweat turns into water vapour it needs heat which it takes from your body helping to cool it - the less clothing the more chance for this heat loss.

From BBC May 22, 2026

Plus humidity is a big factor as moist cloudy air slows both heating and cooling because water vapour absorbs the heat.

From BBC Mar. 19, 2026

The air was hot and sticky and heavily charged with a shimmering white water vapour.

From Stubble by George Looms

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