1) Accelerator factor 2) Clotting factor 3) Coagulation factor 4) Factor v 5) Prothrombin accelerator 
Synonym for factor v ... <chemical> 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. ... Chemical nam...
(pro″ak-sel´әr-in) factor V.
Type: Term Pronunciation: prō′ak-sel′ĕr-in Synonyms: factor V
[n] - a coagulation factor
prothrombin accelerator noun a coagulation factor