Penicillin
/pˌɛnəˈsɪlən/
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Definition
(noun) Any of a group of narrow-spectrum antibiotics obtained from Penicillium molds or synthesized, that have a beta-lactam structure and are active against gram-positive bacteria and used in the treatment of various infections and diseases.
Sentence Examples
Penicillin has contributed much to the welfare of mankind.
To whom do we owe the discovery of penicillin?
CEFR Practice Quiz
The discovery of ____ by Alexander Fleming revolutionized the treatment of bacterial infections.