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Noun: hemophilia B
Usage: N. Amer (elsewhere: haemophilia B)
  1. A clotting disorder similar to hemophilia A but caused by a congenital deficiency of factor IX
    - haemophilia B [Brit, Cdn], Christmas disease

Type of: bleeder's disease, haemophilia [Brit, Cdn], hemophilia [N. Amer]

Encyclopedia: Hemophilia B