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Lactam   Listen
noun
Lactam  n.  (Chem.) One of a series of anhydrides of an amido type, analogous to the lactones, as oxindol; a cyclic amide.
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)






Collaborative International Dictionary of English 0.48







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