absolute humidity

US/ˈæb.səˌlut hjuˈmɪd.ɪ.ti/US/ˌæb.səˈljut hjuˈmɪd.ɪ.ti/

noun

In a system of moist air, the ratio of the mass of water vapor present to the volume occupied by the mixture, that is, the density of the water vapor component. Absolute humidity is usually expressed in grams of water vapor per cubic meter or, in engineering practice, in grains per cubic foot. Because this measure of atmospheric humidity is not conservative with respect to adiabatic expansion or compression, it is not commonly used by meteorologists. (Also called vapor concentration and vapor density). See relative humidity.

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Meanings

nounabsolute humidity (countable and uncountable, plural absolute humidities)

plural absolute humidities

  1. countableuncountableclimatologyIn a system of moist air, the ratio of the mass of water vapor present to the volume occupied by the mixture, that is, the density of the water vapor component. Absolute humidity is usually expressed in grams of water vapor per cubic meter or, in engineering practice, in grains per cubic foot. Because this measure of atmospheric humidity is not conservative with respect to adiabatic expansion or compression, it is not commonly used by meteorologists. (Also called vapor concentration and vapor density). See relative humidity.

Translations

Czech absolutní vlhkost
  • absolutní vlhkostmass of water vapour in a given volume of air
Dutch absolute vochtigheid
  • absolute vochtigheidmass of water vapour in a given volume of air
Estonian absoluutne niiskus
  • absoluutne niiskusmass of water vapour in a given volume of air
Finnish absoluuttinen kosteus
  • absoluuttinen kosteusmass of water vapour in a given volume of air
French humidité absolue
  • humidité absoluemass of water vapour in a given volume of air
German absolute Feuchtigkeit
  • absolute Feuchtigkeitmass of water vapour in a given volume of air
Italian umidità assoluta
  • umidità assolutamass of water vapour in a given volume of air
Portuguese humidade absoluta
  • humidade absolutamass of water vapour in a given volume of air
Russian абсолю́тная вла́жность
  • абсолю́тная вла́жность (absoljútnaja vlážnostʹ)mass of water vapour in a given volume of air
Spanish humedad assoluta
  • humedad assolutamass of water vapour in a given volume of air
Cite this entry
APA

absolute humidity. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/absolute%20humidity

MLA

“absolute humidity.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/absolute%20humidity. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “absolute humidity,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/absolute%20humidity.

Source: absolute humidity on Wiktionary, CC BY-SA 4.0.