Lexic.us

Definition of Penicillin

1. Noun. Any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases.

Definition of Penicillin

1. Noun. (pharmaceutical drug) 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. ¹

¹ Source: wiktionary.com

Definition of Penicillin

1. [n -S]

Medical Definition of Penicillin

1. Probably the best known of the antibiotics, derived from the mould Penicillium notatum. It blocks the cross linking reaction in peptidoglycan synthesis and therefore destroys the bacterial cell wall making the bacterium very susceptible to damage. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)

Lexicographical Neighbors of Penicillin

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