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Related to evapotranspiration: Potential evapotranspiration
1. The combined processes of evaporation, sublimation, and transpiration of the water from the earth's surface into the atmosphere.
2. The total amount of water transferred from the earth to the atmosphere.
[evapo(ration) and transpiration.]
(Environmental Science) the return of water vapour to the atmosphere by evaporation from land and water surfaces and by the transpiration of vegetation
e•vap•o•tran•spi•ra•tion(ɪˌvæp oʊˌtræn spəˈreɪ ʃən)
the transfer of moisture from the earth to the atmosphere by evaporation of water and transpiration from plants.
[1945–50; evapo(ration) + transpiration]