HYDRATION
hydration
(noun) the process of combining with water; usually reversible
Source: WordNet® 3.1
Etymology
Noun
hydration (usually uncountable, plural hydrations)
(chemistry) The incorporation of water molecules into a complex with those of another compound.
(biology) The process of providing an adequate amount of water to body tissues.
(construction) The chemical reaction by which a substance (such as cement) combines with water, giving off heat to form a crystalline structure in its setting and hardening.
Source: Wiktionary
Hy*dra"tion, n. (Chem.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition