ˌtīrəˈthrīs ə n, -ris ə n noun
( -s )
Etymology: New Latin Tyrothric-, Tyrothrix, generic name formerly applied to various spore-forming bacteria (from tyr- + -thrix ) + English -in
: an antibiotic mixture consisting chiefly of tyrocidine and gramicidin usually extracted from a soil bacillus ( Bacillus brevis ) as a gray to brown powder and used for local applications especially for infections caused by gram-positive bacteria