Definition of methicillin
: a semisynthetic penicillin C17H19N2O6NaS used especially in the form of its sodium salt against beta-lactamase-producing staphylococci
Recent Examples of methicillin from the Web
The WHO list is meant to guide antibiotics research, and priorities include carbapenem-resistant Enterobacteriaceae and methicillin-resistant Staphylococcus aureus—
Background: The M in MRSA stands for methicillin, the first of the semi-synthetic penicillins, created by Beecham Laboratories in 1960 in response to a worldwide 1950s outbreak of penicillin-resistant staph.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'methicillin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of methicillin
meth- + penicillin
First Known Use: 1961See Words from the same year
Medical Definition of methicillin
: a semisynthetic penicillin C17H19N2O6NaS that is especially effective against beta-lactamase producing staphylococci
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