un·sat·u·rat·ed /-ˈsæʧəˌretəd/
 (a.)沒有飽和的,不飽和的


 unsaturated
 *非飽和


 Un·sat·u·ra·ted a.
 1. Capable of absorbing or dissolving to a greater degree; as, an unsaturated solution.
 2. Chem. Capable of taking up, or of uniting with, certain other elements or compounds, without the elimination of any side product; thus, aldehyde, ethylene, and ammonia are unsaturated; benzene has three unsaturated bonds.  The term is applied most commonly to compounds with a double or triple bond between two carbon atoms (as in ethylene).

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 unsaturated
      adj 1: not saturated; capable of dissolving more of a substance at
             a given temperature; "an unsaturated salt solution"
             [ant: saturated]
      2: used of a compound (especially of carbon) containing atoms
         sharing more than one valence bond; "unsaturated fats"
         [ant: saturated]
      3: (of color) not chromatically pure; diluted; "an unsaturated
         red" [ant: saturated]