evaporation e·vap·o·ra·tion (ĭ-vāp'ə-rā'shən)
n.
A change from liquid to vapor form.
Loss of volume of a liquid by conversion into vapor. Also called volatilization.
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.