单词 | beta-lactam |
释义 | be·ta-lac·tam ![]() n. 1. A lactam composed of a four-membered ring, formed by intramolecular condensation of an amino acid in which the amino group is located at the beta position, or any compound containing this group. 2. A beta-lactam antibiotic. [BETA, second (in the series of lactam rings, the first being the simplest) + LACTAM.] |
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