Tyrothricin
noun
1.
an antibiotic, obtained from the soil bacterium Bacillus brevis, consisting of tyrocidine and gramicidin and active against Gram-positive bacteria such as staphylococci and streptococci: applied locally for the treatment of ulcers and abscesses
tyrothricin ty·ro·thri·cin (tī’rō-thrī’sĭn)
n.
A gray-brown mixture consisting mainly of tryocidine and gramicidin, used as a topical antibiotic in treating infections caused by gram-positive bacteria.
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