- a light-yellow to colorless, slightly water-soluble liquid that is either one or a mixture of two unsaturated ketones having the formula C13H20O, used chiefly in perfumery.
- a yellowish liquid mixture of two isomers with an odour of violets, extracted from certain plants and used in perfumery
- either of these two isomers. Formula: C 13 H 20 O
