/ ɪˈvæpəreɪt; NAmE / verb
1.
if a liquid evaporates or if sth evaporates it, it changes into a gas, especially steam :
[ v ]
Heat until all the water has evaporated.
[ vn ]
The sun is constantly evaporating the earth's moisture.
2.
[ v ] to disappear, especially by gradually becoming less and less :
Her confidence had now completely evaporated.
► evap·or·ation / ɪˌvæpəˈreɪʃn; NAmE / noun [ U ]
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WORD ORIGIN
late Middle English : from Latin evaporat- changed into vapour, from the verb evaporare , from e- (variant of ex- ) out of + vapor steam, vapour.