In particular, a billion is 10 9 = 1 000 000 000 in the American system and 10 12 = 1 000 000 000 000 in the European system. For 10 9, Europeans say thousand million or milliard.. Although we describe the two systems today as American or European, both systems are actually of French origin.
Definition of warfarin. : 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.
Warfarin, an oral anticoagulant, prevents the formation of. blood clots, and if a blood clot has already occurred, it prevents further clot. progression. Although Warfarin is an effective anticoagulant, due to its narrow. therapeutic index and its interactions with many other drugs, both western and.