Un*sat"u*ra`ted(?), a. 1. Capable of absorbing or dissolving to a greater degree; as, an unsaturated solution.
(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).
[1913 Webster +PJC]
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Wed 12th December 2018