tyrocidine, tyrocidin(noun)

a basic polypeptide antibiotic derived from a soil bacterium; a major component of tyrothricin

tyrocidine(Noun)

a polypeptide antibiotic produced by bacteria in the soil

Tyrocidine

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.