penicillin

One entry found for penicillin.

Main Entry: pen·i·cil·lin
Pronunciation: "pe-n&-'si-l&n
Function: noun
Etymology: New Latin Penicillium
1 : any of several relatively nontoxic antibiotic acids of the general formula C₉H₁₁N₂O₄SR that are produced by molds (genus Penicillium and especially P. notatum or P. chrysogenum) or synthetically and are used especially against gram-positive cocci; also : a mixture of such acids
2 : a salt or ester of a penicillin or a mixture of such salts or esters