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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. 2015.
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Examples from the Web for evaporation
Contemporary Examples
Historical Examples
  • After reaching the lake these fresh waters, in the ordinary meaning of the term, are concentrated by evaporation.

    North America Israel C. Russell
  • Round these there were circles of dampness, showing that evaporation was taking place.

    The Slave Of The Lamp Henry Seton Merriman
  • Warming the glass slightly, evaporation is promoted, but by evaporation the water only is removed.

    Six Lectures on Light John Tyndall
  • evaporation and condensation, woods and glaciers, have all been brought into play.

    Canada and the Canadians Sir Richard Henry Bonnycastle
  • Nevertheless, the young and vigorous Caspian only represents the first stage in the process of evaporation of an inland sea.

    Falling in Love Grant Allen
  • Study for a few days the effect of evaporation on the several soils.

    Agriculture for Beginners Charles William Burkett
  • The residue left on the evaporation of chloroform should be employed for testing.

    Aids to Forensic Medicine and Toxicology W. G. Aitchison Robertson
  • To provide a mulch of dry soil so as to prevent the evaporation of moisture.

    Agriculture for Beginners Charles William Burkett
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 American Heritage® 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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