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[sahy-krom-i-ter] /saɪˈkrɒm ɪ tər/
an instrument for determining atmospheric humidity by the reading of two thermometers, the bulb of one being kept moist and ventilated.
Origin of psychrometer
1720-30; psychro- + -meter
Related forms
[sahy-kruh-me-trik] /ˌsaɪ krəˈmɛ trɪk/ (Show IPA),
psychrometrical, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for psychrometer


a type of hygrometer consisting of two thermometers, one of which has a dry bulb and the other a bulb that is kept moist and ventilated. The difference between the readings of the thermometers gives an indication of atmospheric humidity Also called wet-and-dry-bulb thermometer
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
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Word Origin and History for psychrometer

"instrument to measure moisture in the atmosphere," 1749, from Latinized form of Greek psykhros "cold" + -meter.

Online Etymology Dictionary, © 2010 Douglas Harper
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psychrometer in Medicine

psychrometer psy·chrom·e·ter (sī-krŏm'ĭ-tər)
An instrument that uses the difference in readings between thermometers specialized to measure the moisture content or relative humidity of air.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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psychrometer in Science
See under hygrometer.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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