an instrument with wet- and dry-bulb thermometers, for measuring moisture in the air
Origin of psychrometerpsychro- + -meter: origin, originally , thermometer
An instrument that uses the difference in readings between two thermometers, one having a wet bulb and the other having a dry bulb, to measure the moisture content or relative humidity of air.
- (meteorology) Any of several instruments used to measure the relative humidity of the atmosphere; especially a wet-and-dry-bulb hygrometer.
psychro- +"Ž -meter