/wawr"feuh rin/ , n. Chem.
1. a colorless, crystalline, water-insoluble anticoagulant, C 19 H 16 O 4 , used chiefly as a rodenticide.
2. Pharm. a preparation of this used in the management of potential or existing clotting disorders.
[ 1945-50; W ( isconsin ) A ( lumni ) R ( esearch ) F ( oundation ) (owners of patent) + (COUM)ARIN ]