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[hyoo-mid-i-tee or, often, yoo-] /hyuˈmɪd ɪ ti or, often, yu-/
humid condition; moistness; dampness.
an uncomfortably high amount of relative humidity:
It's not the heat, it's the humidity that tires me out.
Origin of humidity
1350-1400; Middle English humydite < Latin (h)ūmiditās. See humid, -ity Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for humidity
Contemporary Examples
Historical Examples
  • Mrs. Beale remarked that it wasn't the heat that bothered us so, but the humidity.

    The Spenders Harry Leon Wilson
  • Not a breath of air stirred, and the humidity and heat were awful.

    The Long Labrador Trail Dillon Wallace
  • Hendricks reports the air breathable, with a humidity of one hundred.

    The Terror from the Depths Sewell Peaslee Wright
  • But it lacked the roughness and humidity of the finest grass.

    A Pair of Blue Eyes Thomas Hardy
  • In spite of the humidity of the air, his ragged garments had dried on his body.

    Storm Over Warlock Andre Norton
British Dictionary definitions for humidity


the state of being humid; dampness
a measure of the amount of moisture in the air See relative humidity, absolute humidity
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 humidity

late 14c., from Old French humidité, from Latin humiditatem (nominative humiditas), from humidus (see humid).

Online Etymology Dictionary, © 2010 Douglas Harper
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humidity in Medicine

humidity hu·mid·i·ty (hyōō-mĭd'ĭ-tē)
Dampness, especially of the 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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humidity in Science
The amount of water vapor in the atmosphere, usually expressed as either absolute humidity or relative humidity.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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humidity in Culture
humidity (relative and absolute)

The amount of water vapor in the air. Humidity is measured in two ways: (1) Absolute humidity is the percentage of water vapor actually present in the air. (2) Relative humidity is the absolute humidity divided by the amount of water that could be present in the air. Relative humidity indicates the degree of comfort or discomfort one feels from the humidity, because it indicates the amount of perspiration that can evaporate from the skin.

The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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