- Originally, an antibiotic substance obtained from cultures of the molds Penicillium notatum or P. chrysogenum; interferes with cell wall synthesis in bacteria.
- One of a family of natural or synthetic variants of penicillic acid. They are mainly bactericidal, are especially active against gram-positive organisms, and, with the exception of hypersensitivity reactions, show a particularly low toxic action on animal tissue.
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.