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atmometer

[ at-mom-i-ter ]

noun

  1. an instrument for measuring the rate at which water evaporates.


atmometer

/ ætˈmɒmɪtə /

noun

  1. an instrument for measuring the rate of evaporation of water into the atmosphere Also calledevaporimeterevaporometer
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


atmometer

/ ăt-mŏmĭ-tər /

  1. An instrument that measures the rate of evaporation of water into the atmosphere. Atmometers usually measure the evaporation of water from a free water surface (such as a pan of water set into the ground so that the water's surface is even with the ground's surface) or from a porous, water-saturated surface (such as filter paper placed over a graduated cylinder of water). In the first type, the difference between the ground surface and the water level is used to calculate the volume of water that has evaporated in a given period of time. In the second type, the water volume is read directly from the graduated cylinder.
  2. Also called evaporimeter


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Derived Forms

  • atˈmometry, noun
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Word History and Origins

Origin of atmometer1

First recorded in 1805–15; atmo- + -meter
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Example Sentences

Atmometer, an instrument for measuring the amount of evaporation from a moist surface in a given time.

Atmometer, at-mom′e-tėr, n. an instrument for measuring the rate of evaporation from a moist surface.

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atmolysisatmometry