penicillin

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English[edit]

Etymology[edit]

Coined by Alexander Fleming after New Latin Penicillium notatum (now Penicillium chrysogenum), a fungus from which penicillin is obtained.

Noun[edit]

penicillin (countable and uncountable, plural penicillins)

  1. (pharmacology) Any of a group of broad-spectrum antibiotics obtained from Penicillium molds or synthesized; they have a beta-lactam structure; most are active against gram-positive bacteria and used in the treatment of various infections and diseases.

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