different between unsaturated vs desaturation

English

un- +? saturated

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.

de- +? saturation

desaturation (countable and uncountable, plural desaturations)

(chemistry) the conversion of a saturated compound to an unsaturated one by removing hydrogen or other atoms to form a double bond
(medicine) a decrease in the level of oxygen saturation in a patient's haemoglobin

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