hydration
水合
hy·dra·tion /haɪˈdreʃən/ 名詞
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.
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hydration
n : the process of combining with water; usually reversible