/ Dictionary / Index V vancomycin: Meaning and Definition of Find definitions for: van•co•my•cin Pronunciation: (vang"ku-mī'sin, van"-), [key] — n. Pharm. a bactericidal antibiotic, CHClNO, produced by Streptomyces orientalis, used in the treatment of antibiotic-associated colitis and endocarditis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: vancomycin (Thesaurus) Vance van conversion Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language