Also found in: Thesaurus, Medical, Wikipedia.
Related to methicillin: oxacillin, vancomycin
A semisynthetic penicillin, C17H20N2O6S, formerly used in the form of its sodium salt to treat infections caused by penicillinase-producing staphylococci.
(Pharmacology) a semisynthetic penicillin used to treat various infections
Switch to new thesaurus
|Noun||1.||methicillin - antibiotic drug of the penicillin family used in the treatment of certain staphylococcal infections|
penicillin - any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases