warfarin

American  

[wawr-fuh-rin] / ˈwɔr fə rɪn /

noun

Chemistry.

1. a colorless, crystalline, water-insoluble anticoagulant, C 19 H 16 O 4 , used chiefly as a rodenticide.

2. Pharmacology. a preparation of this used in the management of potential or existing clotting disorders.

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warfarin British  

/ ˈwɔːfərɪn /

noun

1. a crystalline insoluble optically active compound, used as a rodenticide and, in the form of its sodium salt, as a medical anticoagulant. Formula: C 19 H 16 O 4

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warfarin Scientific  

/ wôr′fər-ĭn /

1. A white crystalline compound used as a rodenticide and as an anticoagulant in medicine. Warfarin is a derivative of coumarin. Chemical formula: C ₁₉ H ₁₆ O ₄ .

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Etymology

Origin of warfarin

1945–50; W(isconsin) A(lumni) R(esearch) F(oundation) (owners of patent) + (coum)arin

Example Sentences

NSAIDs also interact with several medications, including warfarin and certain antidepressants, increasing the risk of bleeding and other complications.

From Science Daily • Jan. 20, 2026

The poisons being targeted — chlorophacinone and warfarin — are known as first-generation anticoagulant rodenticides.

From Los Angeles Times • Sep. 6, 2024

Garlic supplements may increase the risk for bleeding, especially if people are taking anticoagulant medication such as warfarin.

From Seattle Times • Jan. 17, 2024

Tests found warfarin in Mr Sharrard’s blood - an anticoagulant drug that could lead to serious bleeding.

From BBC • Dec. 22, 2023

Patients treated with warfarin early postoperatively also had an increased risk of major bleeding events.

From Science Daily • Dec. 7, 2023