/ Dictionary / Index B bleomycin: Meaning and Definition of Find definitions for: ble•o•my•cin Pronunciation: (blē"u-mī'sin), [key] — n. Pharm. a cytotoxic antibiotic, CHNOS, derived from the fermentation product of the bacterium Streptomyces certicillus, used in the management of certain epithelial cell and testicular carcinomas and malignant lymphomas. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. blent blephar- Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language