[ih-vap-uh-rey-shuh n] /ɪˌvæp əˈreɪ ʃən/

the act or process of .
the state of being .
Archaic. matter or the quantity of matter or passed off in vapor.

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).

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

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 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.


Read Also:

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    noun 1. an atmometer consisting of a pan about 4 feet (1.2 meters) in diameter and 10 inches (25.4 cm) in depth.

  • Evaporation pressure

    evaporation pressure See vapor pressure.

  • Evaporative cooling

    noun a system or process in which the heat is removed from an object by the evaporation of a liquid coolant; also, the process in which outside air is pre-cooled before passing through a space

  • Evaporator

    [ih-vap-uh-rey-ter] /ɪˈvæp əˌreɪ tər/ noun 1. a device in which evaporation takes place, as for thickening syrup. 2. the part of a refrigeration system in which the refrigerant absorbs heat and changes from a liquid to a gas.

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