Meaning of WET-BULB THERMOMETER

WordNet Dictionary
	Definition:		[n]  a thermometer with a bulb that is covered with moist muslin; used in a psychrometer to measure humidity
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	Antonyms:		dry-bulb thermometer
	See Also:		psychrometer, thermometer
Webster's 1913 Dictionary
	Definition:		\Wet-bulb thermometer\ (Physics) That one of the two similar thermometers of a psychrometer the bulb of which is moistened; also, the entire instrument.