tyrocidine
noun
ty·ro·ci·dine ˌtī-rə-ˈsī-dᵊn 
variants or less commonly tyrocidin
: a basic polypeptide antibiotic produced by a soil bacillus (Bacillus brevis)
Word History
Etymology
tyrothricin + gramicidin
First Known Use
1940, in the meaning defined above
Medical Definition
tyrocidine
noun
ty·ro·ci·dine
variants also tyrocidin
ˌtī-rə-ˈsīd-ᵊn
: a basic polypeptide antibiotic produced by a soil bacterium of the genus Bacillus (B. brevis) and constituting the major component of tyrothricin