Dictionary![]() ![]() i•ronePronunciation: (ī-rōn', ī'rōn), [key] —n. Chem. a colorless liquid of isomeric, unsaturated ketones, C14H22O, obtained from orris root: used in perfumery for its odor of violets. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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