Definitions for nystatin
nystatin, Mycostatin, Nystan(noun)
an antifungal and antibiotic (trade names Mycostatin and Nystan) discovered in New York State; derived from soil fungi actinomycetes
An antifungal drug used especially against Candida
U.S. National Library of Medicine
Macrolide antifungal antibiotic complex produced by Streptomyces noursei, S. aureus, and other Streptomyces species. The biologically active components of the complex are nystatin A1, A2, and A3.