'Evaporometer' definitions:

Definition of 'evaporometer'

(from WordNet)
noun
An instrument that measures rate of evaporation of water [syn: atmometer, evaporometer]

Definition of 'Evaporometer'

From: GCIDE
  • Evaporometer \E*vap`o*rom"e*ter\, n. [L. evaporare to evaporate + -meter: cf. F. ['e]vaporm[`e]tre.] (Physics) An instrument for ascertaining the quantity of a fluid evaporated in a given time; an atmometer. [1913 Webster]