- a polysaccharide, occurring in various tissues, especially the liver, and having anticoagulent properties.
- a commercial form of this substance, obtained from the liver and lungs of domesticated food animals, that when injected into the blood prevents coagulation: used chiefly in the treatment of thrombosis.
- a polysaccharide, containing sulphate groups, present in most body tissues: an anticoagulant used in the treatment of thrombosis
