- a variation of vapor.
vapour
Americannoun
noun
-
particles of moisture or other substance suspended in air and visible as clouds, smoke, etc
-
a gaseous substance at a temperature below its critical temperature Compare gas
-
a substance that is in a gaseous state at a temperature below its boiling point
-
rare something fanciful that lacks substance or permanence
-
archaic a depressed mental condition believed originally to be the result of vaporous exhalations from the stomach
verb
-
to evaporate or cause to evaporate; vaporize
-
(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.
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 the Sun heats the ground, the water vapour suddenly condenses.
From Barron's ● Jul. 27, 2026
The colder the air gets the less water vapour it is able to contain.
From BBC ● Mar. 20, 2026
A vapour barrier is placed on top of the insulation, before engineers lay mats containing glycol on top to keep the ice cold.
From BBC ● Feb. 10, 2026
One great coil of vapour went whirling up, twisting round and round Orthanc, until it looked like a tall peak of cloud, fiery underneath and moonlit above.
From "The Two Towers" by J. R. R. Tolkien
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.
