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vapour

[ vey-per ]

noun

, Chiefly British.


vapour

/ ˈveɪpə /

noun

  1. particles of moisture or other substance suspended in air and visible as clouds, smoke, etc
  2. a gaseous substance at a temperature below its critical temperature Compare gas
  3. a substance that is in a gaseous state at a temperature below its boiling point
  4. rare.
    something fanciful that lacks substance or permanence
  5. the vapours archaic.
    a depressed mental condition believed originally to be the result of vaporous exhalations from the stomach
“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


verb

  1. to evaporate or cause to evaporate; vaporize
  2. intr to make vain empty boasts; brag
“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
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Spelling Note

See -or 1.
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Derived Forms

  • ˈvapourish, adjective
  • ˈvapoury, adjective
  • ˈvapourless, adjective
  • ˌvapouraˈbility, noun
  • ˈvapourer, noun
  • ˈvapourable, adjective
  • ˈvapour-ˌlike, adjective
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Word History and Origins

Origin of vapour1

C14: from Latin vapor
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Example Sentences

However, in the model the polar regions of Arrakis have significantly more atmospheric moisture and high cloud cover which acts to warm the climate since water vapour is a greenhouse gas.

Cooling of the atmosphere can also occur, as clouds formed from the emitted water vapour reflect incoming sunlight back to space.

She saw his back for an instant against the pale gloom of the garden, in which vapour was curling.

This shows what a considerable power is lost by cold sides where the vapour is so rare.

As they move in toward the sun long trails of vapour stream back from the somewhat consolidated head.

At other times spouts of green or black vapour rise, mix and lose themselves in the yellow cloud.

The sphere is so near to the sun that if it were possessed of water it would inevitably bear an atmosphere full of vapour.

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