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humidistat

[hyoo-mid-uh-stat or, often, yoo-] /hyuˈmɪd əˌstæt or, often, yu-/
noun
1.
an instrument for measuring and controlling humidity.
Also called hygrostat [hahy-gruh-stat] /ˈhaɪ grəˌstæt/ (Show IPA), hygrostat.
Origin
1905-1910
1905-10; humid + -i- + -stat
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for hygrostat

hygrostat

/ˈhaɪɡrəˌstæt/
noun
1.
another name for humidistat

humidistat

/hjuːˈmɪdɪˌstæt/
noun
1.
a device for maintaining constant humidity Also called hygrostat
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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hygrostat in Science
hygrostat
  (hī'grə-stāt')   
A device used for regulating the relative humidity of an enclosed space. A hygrostat contains a sensor that detects a preset level of humidity and is connected to a heater that is turned off and on as needed in order to keep the humidity at the preset level. Hygrostats are used in humidifiers and dehumidifiers, and are placed in the ductwork of laboratories and other facilities where climate control is necessary. Also called humidistat.
humidistat
  (hy-mĭd'ĭ-stāt')   
See hygrostat.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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