(meth″ĭ-sil´in) a semisynthetic penicillin that is highly resistant to inactivation by penicillinase; its sodium salt is used parenterally as an antibacterial. Found on http://www.encyclo.co.uk/local/21001
Methicillin: A semisynthetic penicillin-related antibiotic, also known as Staphcillin, that once was effective against staphylococci (staph) resistant to penicillin because they produce the enzyme penicillinase. Rarely used now, methicillin has been largely superceded by Vancomycin. Over the past 50 years, staph bacteria have become resistant to va... Found on http://www.medterms.com/script/main/art.asp?articlekey=24074
noun antibiotic drug of the penicillin family used in the treatment of certain staphylococcal infections Found on https://www.encyclo.co.uk/local/20974