Unsaturated /(?)/

Un·sat·u·ra·ted

Unsaturated

a.
  1. Capable of absorbing or dissolving to a greater degree; as, an unsaturated solution.
  2. 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). (Chem.)