unsaturated (
http://definr.com/unsaturated)
adj 1: not saturated; capable of dissolving more of a substance at
a given temperature; "an unsaturated salt solution"
[ant:
saturated]
2: (chemistry) 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]