penicillinase-resistant penicillin


penicillinase-resistant penicillin

Any of a group of penicillins that are not inactivated by the enzyme penicillinase. These penicillins retain their effectiveness as antibiotics used for infections caused by bacteria that produce penicillinase. See: bacterial resistance; beta-lactamase resistance; Staphylococcus aureus, methicillin-resistantSee also: penicillin