UNSATURATED
unsaturated
(adjective) (of color) not chromatically pure; diluted; “an unsaturated red”
unsaturated
(adjective) used of a compound (especially of carbon) containing atoms sharing more than one valence bond; “unsaturated fats”
unsaturated
(adjective) not saturated; capable of dissolving more of a substance at a given temperature; “an unsaturated salt solution”
Source: WordNet® 3.1
Etymology
Adjective
unsaturated (not comparable)
(chemistry, of a solution) Not saturated; capable of dissolving more of a solute at the same temperature.
(chemistry) Of a compound containing atoms sharing more than one valence bond, especially of an organic compound having one or more double bonds or triple bonds between carbon atoms.
(of a colour) Not chromatically pure; diluted.
Source: Wiktionary
Un*sat"u*ra`ted, a.
1. Capable of absorbing or dissolving to a greater degree; as, an
unsaturated solution.
2. (Chem.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition