Found 2 items, similar to cephalosporin.
English → English (WordNet) Definition: cephalosporin cephalosporin n : one of several broad spectrum antibiotic substances obtained from fungi and related to penicillin (trade names Mefoxin); addition of side chains has produced semisynthetic antibiotics with greater antibacterial activity [syn: Mefoxin]
English → English (gcide) Definition: cephalosporin Lactam \Lac"tam\, n. [Lactone + amido.] (Chem.) One of a series of anhydrides of an amido type, analogous to the lactones, as oxindol; a cyclic amide. [1913 Webster] beta-lactam or [beta]-lactam, (a) a lactam in which the amide bond is contained within a four-membered ring, which includes the amide nitrogen and the carbonyl carbon. (b) an antibiotic containing a beta-lactam, such as a penicillin, cephalosporin, or carbapenem; also called a beta-lactam antibiotic. [informal, laboratory slang] [PJC]