- not saturated; having the power to dissolve still more of a substance.
- (of an organic compound) having a double or triple bond and capable of taking on elements or groups by direct chemical combination without the liberation of other elements or compounds, as ethylene, CH2=CH2; undersaturated.
- not saturated
- (of a chemical compound, esp an organic compound) containing one or more double or triple bonds and thus capable of undergoing addition reactions
- (of a fat, esp a vegetable fat) containing a high proportion of fatty acids having double bonds
- (of a solution) containing less solute than a saturated solution