/i vap'oh tran'speuh ray"sheuhn/, n. Meteorol.
1. the process of transferring moisture from the earth to the atmosphere by evaporation of water and transpiration from plants.
2. Also called flyoff, water loss. the total volume transferred by this process.

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Loss of water from the soil both by evaporation from the soil surface and by transpiration from the leaves of the plants growing on it.

Factors that affect the rate of evapotranspiration include the amount of solar radiation, atmospheric vapor pressure, temperature, wind, and soil moisture. Evapotranspiration accounts for most of the water lost from the soil during the growth of a crop. Estimation of evapotranspiration rates is thus important in planning irrigation schemes.

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Universalium. 2010.

Look at other dictionaries:

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  • Evapotranspiration — Évapotranspiration L évapotranspiration correspond à la quantité d eau totale transférée du sol vers l atmosphère par l évaporation au niveau du sol et par la transpiration des plantes. Elle correspond au flux de chaleur latente dans le bilan d… …   Wikipédia en Français

  • Evapotranspiration — bezeichnet in der Meteorologie die Summe aus Transpiration und Evaporation, also der Verdunstung von Wasser aus Tier und Pflanzenwelt, sowie der Bodenoberfläche. Der Evapotranspirationswert spielt eine wichtige Rolle in der Hydrologie und im… …   Deutsch Wikipedia

  • évapotranspiration — [ evapotrɑ̃spirasjɔ̃ ] n. f. • 1974; de évapo(ration) et transpiration ♦ Didact. Quantité d eau évaporée par le sol, les nappes liquides, et la transpiration des plantes. ● évapotranspiration nom féminin Quantité d eau évaporée par le sol, les… …   Encyclopédie Universelle

  • Evapotranspiration — Evapotranspiration,   Biologie: Wasserdampfabgabe eines Pflanzenbestandes an die Atmosphäre, bestehend aus der nicht regulierbaren Verdunstung des Bodens (Evaporation) und niederer Pflanzen und der regulierbaren Transpiration höherer Pflanzen …   Universal-Lexikon

  • evapotranspiration — ☆ evapotranspiration [ē vap΄ō tran΄spə rā′shən ] n. [ EVAPO(RATION) + TRANSPIRATION] the total water loss from the soil, including that by direct evaporation and that by transpiration from the surfaces of plants …   English World dictionary

  • Évapotranspiration — Représentation schématique du bilan évapotranspiration/alimentation de la nappe/ruissellement (en anglais) L évapotranspiration correspond à la quantité d eau totale transférée du sol vers l atmosphère par l évaporation au niveau du sol et par la …   Wikipédia en Français

  • Evapotranspiration — evapotranspiracija statusas T sritis ekologija ir aplinkotyra apibrėžtis Bendras vandens išgarinimas tam tikro dydžio Žemės paviršiaus plote. Apima dirvožemio ir augalų išgarinamą (įskaitant transpiraciją) vandenį. atitikmenys: angl.… …   Ekologijos terminų aiškinamasis žodynas

  • evapotranspiration — noun Etymology: evaporation + transpiration Date: 1938 loss of water from the soil both by evaporation and by transpiration from the plants growing thereon …   New Collegiate Dictionary

  • evapotranspiration — noun The transfer of water from the surface of the earth to the atmosphere by evaporation, sublimation and transpiration …   Wiktionary

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