Dictionary
i•so•tre•tin•o•in
Pronunciation: (ī"sō-tri-tin'ō-in, -oin), [key]—
n. Pharm.
a yellowish-orange to orange crystalline powder, C
20H
28O
2, used in the treatment of cystic acne.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.