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A colorless to yellowish liquid ketone, C13H20O, having the odor of cedar or violets, occurring in either of two isomeric forms, and used chiefly in perfumes.

[Originally a trademark.]


1. (Elements & Compounds) a yellowish liquid mixture of two isomers with an odour of violets, extracted from certain plants and used in perfumery
2. (Elements & Compounds) either of these two isomers. Formula: C13H20O
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viridis were collected with an entomological net after being attracted to chemical baits of eugenol, eucalyptol, beta-ionone, methyl salicylate and benzyl benzoate; eugenol was the most attractive chemical, responsible for 46.
6) The term 'vitamin A' is a generic label for beta-ionone derivatives other than provitamin A carotenoids.
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