/ Dictionary / Index S streptomyces: Meaning and Definition of Find definitions for: strep•to•my•ces Pronunciation: (strep"tu-mī'sēz), [key] — pl. -ces. any of several aerobic bacteria of the genus Streptomyces, certain species of which produce antibiotics. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: streptomyces (Thesaurus) streptolysin streptomycin Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language