| an inherited autosomal recessive disease in which abnormally slow coagulation of blood may lead to spontaneous bleeding, excessive bleeding following an injury, and heavy menstrual flow. |

von Willebrand's disease von Wil·le·brand's disease (vŏn wĭl'ə-brāndz', fôn vĭl'ə-bränts')
n.
A hereditary predisposition to hemorrhaging characterized by bleeding from mucous membranes and various abnormalities in the blood components responsible for clotting. Also called angiohemophilia, vascular hemophilia.