Cite
 

Meaning of ionone

i•o•none

Pronunciation: (ī'u-nōn"), [key]
— n. Chem.
  1. a light-yellow to colorless, slightly water-soluble liquid that is either one or a mixture of two unsaturated ketones having the formula CHO, used chiefly in perfumery.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.