Pronunciation: (i-vap"ō-tran"spu-rā'shun), [key]
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.