Definitions for: Hydration

[n] the process of combining with water; usually reversible

Webster (1913) Definition: Hy*dra"tion, n. (Chem.)
The act of becoming, or state of being, a hydrate.

Water of hydration (Chem.), water chemically combined with
some substance to form a hydrate; -- distinguished from
water of crystallization.

See Also: association