evaporometer

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WORDNET DICTIONARY

evaporometer(n = noun.artifact) atmometer - an instrument that measures rate of evaporation of water;

is a kind of measuring device, measuring instrument, measuring system

evaporometer, n. [L. evaporare to evaporate + -meter: cf. F. évapormètre.].

An instrument for ascertaining the quantity of a fluid evaporated in a given time; an atmometer. [1913 Webster]