evapotranspiration
Concise Oxford English Dictionary © 2008 Oxford University Press:
evapotranspiration /ɪˌvapəʊtranspɪˈreɪʃ(ə)n/
▶noun the process by which water is transferred from the land to the atmosphere by evaporation from the soil and other surfaces and by transpiration from plants.
'evapotranspiration' also found in these Oxford entries:

