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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

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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

Hydrogen has often been touted as an environmentally-friendly future fuel because when burned the only by-product is water vapour.

From BBC • Apr. 21, 2026

Observing water with a ground-based telescope is no mean feat as the abundant water vapour in Earth's atmosphere degrades the astronomical signals.

From Science Daily • Feb. 29, 2024

"Our recent images reveal a substantial quantity of water vapour at a range of distances from the star that include a gap where a planet could potentially be forming at the present time," says Facchini.

From Science Daily • Feb. 29, 2024

The so-called “telluric lines” seen in the solar spectrum, are due to water vapour in the earth’s atmosphere.

From Astronomical Curiosities Facts and Fallacies by Gore, J. Ellard

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