Definitions for factor viii
antihemophilic factor, antihaemophilic factor, antihemophilic globulin, antihaemophilic globulin, factor VIII, Hemofil(noun)
a coagulation factor (trade name Hemofil) whose absence is associated with hemophilia A
U.S. National Library of Medicine
Blood-coagulation factor VIII. Antihemophilic factor that is part of the factor VIII/von Willebrand factor complex. Factor VIII is produced in the liver and acts in the intrinsic pathway of blood coagulation. It serves as a cofactor in factor X activation and this action is markedly enhanced by small amounts of thrombin.