| NOUN | artifact | penicillinase-resistant antibiotic | a form of penicillin that is not rendered inactive by penicillinase |
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| Meaning | A form of penicillin that is not rendered inactive by penicillinase. | |
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| Narrower | nafcillin, Nafcil | A penicillinase-resistant form of penicillin (trade name Nafcil) used (usually in the form of its sodium salt) to treat infections caused by penicillin-resistant strains of staphylococci |
| oxacillin | A form of penicillin resistant to penicillinase and effective against penicillin-resistant staphylococci | |
| Broader | penicillin | Any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases |
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