vapour
Americannoun
noun
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particles of moisture or other substance suspended in air and visible as clouds, smoke, etc
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a gaseous substance at a temperature below its critical temperature Compare gas
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a substance that is in a gaseous state at a temperature below its boiling point
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rare something fanciful that lacks substance or permanence
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archaic a depressed mental condition believed originally to be the result of vaporous exhalations from the stomach
verb
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to evaporate or cause to evaporate; vaporize
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(intr) to make vain empty boasts; brag
Spelling
See -or 1.
Other Word Forms
Etymology
Origin of vapour
C14: from Latin vapor
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 the Sun heats the ground, the water vapour suddenly condenses.
From Barron's ● Jul. 27, 2026
As the air rises, it cools and the water vapour condenses into a cloud.
From BBC ● 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
A rare weather event, storms like these are formed when heat from the wildfires makes the air above the fire rise rapidly, carrying smoke, ash and water vapour high into the atmosphere.
From BBC ● Jul. 27, 2026
“I do so want you to be good! Please, please be good and ...” Two minutes later the Voice and the soma vapour had produced their effect.
From "Brave New World" by Aldous Huxley
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
