/blee'euh muy"sin/ , n. Pharm.
a cytotoxic antibiotic, C 55 H 84 N 17 O 21 S 3 , derived from the fermentation product of the bacterium Streptomyces certicillus, used in the management of certain epithelial cell and testicular carcinomas and malignant lymphomas.
[ 1965-70; appar. alter. of phleomycin, an antibiotic derived earlier from the same source; initial elements phleo-, bleo- unexplained by originators; see -MYCIN ]