Source: The Collaborative International Dictionary of English v.0.48
Dehydration \De`hy*dra"tion\, n. (Chem.)
The act or process of freeing from water; also, the condition
of a body from which the water has been removed.
[1913 Webster]
dehydration
n 1: dryness resulting from the removal of water [syn: desiccation]
2: depletion of bodily fluids
3: the process of extracting moisture [syn: desiccation, dryingup, evaporation]