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absolute humidity

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noun
  1. the mass of water vapor present in a unit volume of moist air.
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Compare dew point, mixing ratio, relative humidity, specific humidity.

Origin of absolute humidity

First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for absolute humidity

absolute humidity

noun
  1. the humidity of the atmosphere, usually expressed as the number of grams of water contained in 1 cubic metre of airCompare relative humidity
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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
absolute humidity in Medicine

absolute humidity

n.
  1. The weight of water vapor present per unit volume of a gas or a mixture of gases.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
absolute humidity in Science

absolute humidity

  1. The amount of water vapor that is present in a unit volume of air, usually expressed in grams per cubic meter. Absolute humidity does not fluctuate with the temperature of the air. Compare relative humidity.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.