TYROTHRICIN

[ty.ro.thri.cin] n [NL Tyrothoric-, Tyrothrix, genus name formerly applied to various bacteria including Bacillus brevis] (1940): an antibiotic mixture that consists chiefly of tyrocidine and gramicidin, is usu. extracted from a soil bacillus (Bacillus brevis) as a gray to brown powder, and is used for local applications esp. for infection caused by gram-positive bacteria