beta-lactam antibiotic(redirected from Penicillin derivatives)
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Any of a class of broad-spectrum antibiotics, such as the penicillins and the cephalosporins, that contain a beta-lactam ring.
any of a group of antibiotics, including the cephalosporins and the penicillins, whose chemical structure contains a beta-lactam ring.
Any of the antimicrobial drugs, such as penicillins or cephalosporins, that kill germs by interfering with the synthesis of bacterial cell walls.Synonym: beta-lactam
See also: antibiotic