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ty·ro·ci·dinealso ty·ro·ci·din (tī′rə-sīd′n)
An antibiotic substance that is a major constituent of tyrothricin and consists of a mixture of several closely related polypeptides produced by the soil bacterium Bacillus brevis.
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|Noun||1.||tyrocidin - a basic polypeptide antibiotic derived from a soil bacterium; a major component of tyrothricin|
antibiotic, antibiotic drug - a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections; "when antibiotics were first discovered they were called wonder drugs"
tyrothricin - a mixture of antibiotics applied locally to infections caused by Gram-positive bacteria