Physics. [f. Gr. ἀτμό-ς vapor + μέτρον measure: see -METER.] An instrument for determining the amount of evaporation from a moist surface in a given time.
1815. Edin. Rev., XXIV. 348. Mr. Leslie has invented another instrument which … he has named the Atmometer.
1878. Huxley, Physiogr., 69. Meteorologists occasionally measure the rapidity of evaporation by means of … atmometers.
