am·pho·ter·i·cin B (ām'fə-těr'ĭ-sĭn) n. An antibiotic derived from strains of the actinomycete Streptomyces nodosus and used specifically in treating systemic fungal infections.
amphotericin B am·pho·ter·i·cin B (ām'fə-těr'ĭ-sĭn) n. An antibiotic derived from strains of the actinomycete Streptomyces nodosus and used in treating systemic fungal infections.