thrombophilia (MONDO_0002305) is a condition characterized by an abnormally high level of thrombi. Causes include thrombotic thrombocytopenic purpura, disseminated intravascular coagulation, bone marrow disorders, and antiphospholipid antibody syndrome. Also known as: excessive blood clotting, hypercoagulability, hypercoagulability state, hypercoagulable.