"factor VIII." YourDictionary, n.d. Web. 16 October 2018. <http://www.yourdictionary.com/factor-viii>.
factor VIII. (n.d.). Retrieved October 16th, 2018, from http://www.yourdictionary.com/factor-viii
A protein substance in blood plasma that is an essential part of the blood-clotting process. Most cases of hemophilia are caused by a genetic defect that leads to a deficiency of this factor. Also called antihemophilic factor .