irone

Noun

 * 1)  Any of several ketones, or a mixture of such, found in orris oil (oil extracted from iris roots), used as odorants in perfumes.
 * 2) * 1951 [D. Van Nostrand], Frank C. Whitmore, Organic Chemistry, Volume One: Part I: Aliphatic Compounds, Part II: Alicyclic Compounds, 2nd Edition, 2012, Dover republication, page 565,
 * The previously accepted cycloheptene structure for the irones has been shown recently to be wrong.
 * The previously accepted cycloheptene structure for the irones has been shown recently to be wrong.