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Definition of Monobactam
1. Noun. (organic chemistry) Any of various beta-lactam compounds wherein the beta-lactam ring is alone, not fused to another ring. ¹
¹ Source: wiktionary.com
Medical Definition of Monobactam
1. A class of antibiotic that has a monocyclic beta-lactam nucleus and is structurally different from other beta-lactams; e.g., aztreonam. (05 Mar 2000)