warfarin

noun

war·​fa·​rin ˈwȯr-fə-rən How to pronounce warfarin (audio)
: a crystalline anticoagulant coumarin derivative C19H16O4 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

Examples of warfarin in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Consult your healthcare provider before taking ibuprofen and warfarin together.12 Summary Ibuprofen is a medication that helps reduce pain, fevers, and swelling. Femi Aremu, Verywell Health, 3 Feb. 2025 Anticoagulants, including warfarin, chlorophacinone, and diphacinon, kill mice by thinning their blood. Nafeesah Allen, Better Homes & Gardens, 21 Jan. 2025 Any sudden changes in vitamin K intake can increase or decrease the blood clotting effects of warfarin. Kirstyn Hill, Pharmd, Mph, Health, 8 Dec. 2024 Both turmeric and garlic can have blood-thinning effects, which may interact with blood-thinner medications like Coumadin (warfarin) and increase the risk of bleeding. Chelsea Rae Bourgeois, Rdn, Ld, Health, 25 Nov. 2024 See all Example Sentences for warfarin 

Word History

Etymology

Wisconsin Alumni Research Foundation (its patentee) + coumarin

First Known Use

1950, in the meaning defined above

Time Traveler
The first known use of warfarin was in 1950

Dictionary Entries Near warfarin

Cite this Entry

“Warfarin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/warfarin. Accessed 12 Feb. 2025.

Medical Definition

warfarin

noun
war·​fa·​rin ˈwȯr-fə-rən How to pronounce warfarin (audio)
: 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

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