Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ēvăpōrātĭo, ōnis, f. [evaporo], an evaporating, evaporation: terrae, Sen. Q. N. 1, 1, 6; 6, 13, 1: nivis, Gell. 19, 5, 6.