atmometer

[ at-mom-i-ter ]
/ ætˈmɒm ɪ tər /

noun

an instrument for measuring the rate at which water evaporates.
Also called evaporimeter.

Origin of atmometer

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

Words nearby atmometer

atm, atm., atman, atmo-, atmolysis, atmometer, atmometry, atmophile, atmos clock, atmosphere, atmospheric

Example sentences from the Web for atmometer

British Dictionary definitions for atmometer

atmometer
/ (ætˈmɒmɪtə) /

noun

an instrument for measuring the rate of evaporation of water into the atmosphere Also called: evaporimeter, evaporometer

Derived forms of atmometer

atmometry, noun

Scientific definitions for atmometer

atmometer
[ ăt-mŏm′ĭ-tər ]

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. Also called evaporimeter