/ Dictionary / Index N neomycin: Meaning and Definition of Find definitions for: ne•o•my•cin Pronunciation: (nē"ō-mī'sin), [key] — n. Pharm. an antibiotic produced by an actinomycete, Streptomyces fradiae, administered orally or locally, used chiefly for skin, urinary tract, and eye infections and as a surgical antiseptic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: neomycin (Thesaurus) neomercantilism neon Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language