Noun : a big glycoprotein clotting issue circulating in blood plasma that mediates platelet adhesion to collagen at web sites of vascular injury, that binds to and guards aspect VIII from degradation, and that's deficient or defective in persons influenced with von Willebrand illness See the entire definition regulation of https://edwindkpva.jasperwiki.com/6130469/an_unbiased_view_of_vitamin