a broad-spectrum antibiotic obtained from an actinomycete (Streptomyces fradiae) and used in the treatment of various infections, esp. of the skin and eye
See neomycin in American Heritage Dictionary 4
(nēˌə-mīˈsĭn)
noun
A broad-spectrum antibiotic produced from strains of the actinomycete Streptomyces fradiae and used especially in the form of its sulfate as an intestinal antiseptic in surgery.