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[de- + saturation]

1. Conversion of a saturated organic compound into an unsaturated one, as when stearic acid, C18H36O2, is changed into oleic acid, C18H34O2. The product has different physical and chemical properties after this transformation.
SEE: saturated hydrocarbon
2. The removal of a component from a chemical solution, e.g., a solute from a solvent.
3. The dissociation of oxygen from hemoglobin.

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