Definitions for tyrocidine
a basic polypeptide antibiotic derived from a soil bacterium; a major component of tyrothricin
a polypeptide antibiotic produced by bacteria in the soil
U.S. National Library of Medicine
An antibiotic mixture produced by Bacillus brevis which may be separated into three components, tyrocidines A, B, and C. It is the major constituent (40-60 per cent) of tyrothricin, gramicidin accounting for the remaining 10-20 per cent active material. It is a topical antimicrobial agent, that is very toxic parenterally.