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[ih-vap-uh-rey-shuh n] /ɪˌvæp əˈreɪ ʃən/
the act or process of evaporating.
the state of being evaporated.
Archaic. matter or the quantity of matter evaporated or passed off in vapor.
Origin of evaporation
1350-1400; Middle English evaporacioun < Latin ēvapōrātiōn- (stem of ēvapōrātiō). See evaporate, -ion
Related forms
[ih-vap-uh-rey-tiv, -er-uh-tiv] /ɪˈvæp əˌreɪ tɪv, -ər ə tɪv/ (Show IPA),
evaporatively, adverb
nonevaporation, noun
nonevaporative, adjective
preevaporation, noun
unevaporative, adjective
Can be confused Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for evaporation
Contemporary Examples
Historical Examples
  • Round these there were circles of dampness, showing that evaporation was taking place.

    The Slave Of The Lamp Henry Seton Merriman
  • It's evaporation that puts water into the air, isn't it, sir?

    The Boy with the U. S. Weather Men

    Francis William Rolt-Wheeler
  • evaporation and condensation, woods and glaciers, have all been brought into play.

    Canada and the Canadians Sir Richard Henry Bonnycastle
  • Study for a few days the effect of evaporation on the several soils.

    Agriculture for Beginners Charles William Burkett
  • To provide a mulch of dry soil so as to prevent the evaporation of moisture.

    Agriculture for Beginners Charles William Burkett
  • evaporation is allowed to take place to some extent by delaying the drying.

    The Mother and Her Child William S. Sadler
  • Either of these substances help to retain the ammonia and prevent its evaporation.

    Guano Solon Robinson
  • The salt can be recovered from the filtrate by evaporation of the water.

Word Origin and History for evaporation

late 14c., from Old French évaporation and directly from Latin evaporationem (nominative evaporatio), noun of action from past participle stem of evaporare "disperse in vapor or steam," from ex- "out" (see ex-) + vapor "steam" (see vapor).

Online Etymology Dictionary, © 2010 Douglas Harper
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evaporation in Medicine

evaporation e·vap·o·ra·tion (ĭ-vāp'ə-rā'shən)

  1. A change from liquid to vapor form.

  2. Loss of volume of a liquid by conversion into vapor. Also called volatilization.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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evaporation in Science
The change of a liquid into a vapor at a temperature below the boiling point. Evaporation takes place at the surface of a liquid, where molecules with the highest kinetic energy are able to escape. When this happens, the average kinetic energy of the liquid is lowered, and its temperature decreases.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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evaporation in Culture

evaporation definition

The changing of a liquid into a gas, often under the influence of heat (as in the boiling of water). (See vaporization.)

Note: The evaporation of water from the oceans is a major component in the hydrologic cycle.
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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