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

warfarin

play
noun war·fa·rin \ˈwȯr-fə-rən\

Definition of warfarin

  1. :  a crystalline anticoagulant coumarin derivative C19H16O4 used chiefly in the form of its sodium salt as a rodent poison and in medicine



Origin of warfarin

Wisconsin Alumni Research Foundation (its patentee) + coumarin


First Known Use: 1950


Medical Dictionary

warfarin

play
noun war·fa·rin \ˈwȯr-fə-rən\

Medical Definition of warfarin

  1. :  a crystalline anticoagulant coumarin derivative C19H16O4 related to dicumarol that inhibits the production of prothrombin by vitamin K and is used as a rodent poison and in medicine; also :  its sodium salt C19H15NaO4 used especially in the prevention or treatment of thromboembolic disease—see coumadin




Learn More about warfarin


Seen and Heard

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

WORD OF THE DAY

tending to dismiss important matters

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

reduce disapprove perplex soothe
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