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}]