tyrothricin

noun

ty·​ro·​thri·​cin ˌtī-rə-ˈthrī-sᵊn 

: an antibiotic mixture consisting chiefly of tyrocidine and gramicidin and used topically especially against gram-positive bacteria

Word History

Etymology

New Latin Tyrothoric-, Tyrothrix, genus name formerly applied to various bacteria

First Known Use

1940, in the meaning defined above

Medical Definition

tyrothricin

noun

ty·​ro·​thri·​cin ˌtī-rə-ˈthrīs-ᵊn 

: an antibiotic mixture that consists chiefly of tyrocidine and gramicidin, is obtained from a soil bacterium of the genus Bacillus (B. brevis), and is used in the topical treatment of infections especially of the skin and mouth caused by gram-positive bacteria