psychrometer noun. [sʌɪ'krɒmɪtǝ] E18.
[from PSYCHRO- + -METER.]
Meteorology. A hygrometer consisting of two thermometers, one of which is enclosed in material from which water is caused to evaporate, the degree of cooling indicating the relative humidity of the air. Formerly also, a thermometer.

■ psychro'metric adjective of or pertaining to the psychrometer or psychrometry; hygrometric: L19.

■ psychrometry noun measurement of humidity by means of a psychrometer M19.

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