Noun: Christmas disease 'kris-mus di'zeez
- A clotting disorder similar to haemophilia A but caused by a congenital deficiency of factor IX
- hemophilia B [N. Amer], haemophilia B [Brit, Cdn]
Type of: bleeder's disease, haemophilia [Brit, Cdn], hemophilia [N. Amer]
Encyclopedia: Christmas disease