Evaporation

n. turning into vapor; becoming vapor; process of releasing moisture; disappearing, vanishing

Evaporation is the process by which molecules in a liquid state (e.g. water) spontaneously become gaseous (e.g. water vapor), without being heated to boiling point. It is the opposite of condensation. Generally, evaporation can be seen by the gradual disappearance of a liquid, when exposed to a significant volume of gas.
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E·vap·o·ra·tion n. 1. A change from liquid to vapor form. 2. Loss of volume of a liquid by conversion into vapor. Also called volatilization. [more]Evaporation - Community and Resources

Noun
1. the process of becoming a vapor
(synonym) vaporization, vaporisation, vapor, vapour
(hypernym) phase change, phase transition, state change, physical change
(hyponym) boiling
(derivation) evaporate, vaporise
2. the process of extracting moisture
(synonym) dehydration, desiccation, drying up
(hypernym) extraction
(hyponym) freeze-drying, lyophilization, lyophilisation
(part-holonym) plastination
(derivation) evaporate, vaporize, vaporise

n. evaporation