beta-lactam

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Related to b-lactam: Cephalosporins

β-lac·tam

(lak'tam),
A class of broad-spectrum antibiotics that are structurally and pharmacologically related to the penicillins and cephalosporins.

beta-lactam

(bā′tə-lăk′təm, bē′-)
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.

be·ta-lac·tam

(bā'tă lak'tam)
Class of broad-spectrum antibiotics structurally and pharmacologically related to penicillins and cephalosporins.
References in periodicals archive ?
Role efflux pump(s) in intrinsic resistance of Pseudomonas aeruginosa: active efflux as a contributing factor to b-lactam resistance.
Group 6 - Antibacterials B-lactam penicillin susceptible to B-lactamase
Group 29 - Antibacterials B-lactam antibiotics - penicillin resistant to B-lactamase;