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.
Photo Credit vicuschka/iStock/Getty Images. Warfarin is a medication used to help prevent and treat blood clots. The drug is often referred to as a blood thinner. People who have a history of blood clots or an increased risk for stroke are among those who use warfarin. Like other types of medication, the foods and drinks you consume may alter the way warfarin works in your body.