[ nee-oh-mahy-sin ]
/ ˌni oʊˈmaɪ sɪn /

noun Pharmacology.

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.

Origin of neomycin

First recorded in 1945–50; neo- + -mycin Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for neomycin

/ (ˌniːəʊˈmaɪsɪn) /


an antibiotic obtained from the bacterium Streptomyces fradiae, administered locally in the treatment of skin and eye infections or orally for bowel infections. Formula: C 12 H 26 N 4 O 6

Word Origin for neomycin

C20: from neo- + Greek mukēs fungus + -in
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for neomycin

[ nē′ə-mīsĭn ]


A broad-spectrum antibiotic derived from strains of the actinomycete Streptomyces fradiae and used in its sulfate form as an intestinal antiseptic in surgery.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.