Dictionary
ac•tin•o•my•cin
Pronunciation: (ak-tin"ō-mī'sin, ak"tu-nō-), [key]—
n. Pharm.
any of a group of related antibiotics derived from several species of streptomyces bacteria, used against susceptible bacteria and fungi and in the treatment of various cancers.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.