Medical Definition of antiphospholipid
: relating to or being an antibody (such as anticardiolipin antibody) that acts against phospholipids or proteins that bind to phospholipids and is associated with antiphospholipid syndrome <Formation of thrombi may be promoted by activation of endothelial cells by the antiphospholipid antibodies or by interactions of these antibodies with platelets or other factors in the blood coagulation pathway.—Marie Kelly-Worden and Sara Ghassemifar, in Advances in Lipid Bilayers and Liposomes, volume 8, 2008>
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