Definitions for factor v
proaccelerin, prothrombin accelerator, accelerator factor, factor V(noun)
a coagulation factor
U.S. National Library of Medicine
Heat- and storage-labile plasma glycoprotein which accelerates the conversion of prothrombin to thrombin in blood coagulation. Factor V accomplishes this by forming a complex with factor Xa, phospholipid, and calcium (prothrombinase complex). Deficiency of factor V leads to Owren's disease.