Student Dictionary

One entry found for penicillin.
Main Entry: pen·i·cil·lin
Pronunciation: secondarystresspen-schwa-primarystresssil-schwan
Function: noun
Etymology: from scientific Latin Penicillium "a genus of molds producing antibiotics," from Latin penicillus, literally, "little tail" --related to PENCIL
: any of several antibiotics or a mixture of these produced by penicillia or in the laboratory and used especially against round disease-producing bacteria

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