hy·drate /ˈhaɪˌdret/
 水合物,水化合物,氫氧化物(vt.)使成水化合物
 hy·drate /ˈhaɪˌdret/ 名詞
 Hy·drate v. t. [imp. & p. p. Hydrated p. pr. & vb. n. Hydrating ] To form into a hydrate; to combine with water.
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 Hy·drate n.  Chem. (a) A compound formed by the union of water with some other substance, generally forming a neutral body, as certain crystallized salts. (b) A substance which does not contain water as such, but has its constituents (hydrogen, oxygen, hydroxyl) so arranged that water may be eliminated; hence, a derivative of, or compound with, hydroxyl; hydroxide; as, ethyl hydrate, or common alcohol; calcium hydrate, or slaked lime.
 hydrate
      n : any compound that contains water of crystallization
      v 1: supply water or liquid to in order to maintain a healthy
           balance; "the bicyclists must be hydrated frequently"
      2: become hydrated and combine with water
      3: cause to be hydrated; add water or moisture to; "hydrate
         your skin" [ant: dehydrate]