Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

methicillin

play
noun meth·i·cil·lin \ˌme-thə-ˈsi-lən\

Definition of methicillin

  1. :  a semisynthetic penicillin C17H19N2O6NaS used especially in the form of its sodium salt against beta-lactamase-producing staphylococci



Origin and Etymology of methicillin

meth- + penicillin


First Known Use: 1961


Medical Dictionary

methicillin

play
noun meth·i·cil·lin \ˌmeth-ə-ˈsil-ən\

Medical Definition of methicillin

  1. :  a semisynthetic penicillin C17H19N2O6NaS that is especially effective against beta-lactamase producing staphylococci




Seen and Heard

What made you want to look up methicillin? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

different from the usual or normal

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

acommodate accommodate acommadate accomodate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ