Thrombosis:The formation or presence of a blood clotinabloodvessel. The vessel may be anyveinorarteryas, for example, in a deep vein thrombosis or a coronary (artery)thrombosis. The clot itself is termed athrombus. If the clot breaks loose and travels through the bloodstream, it is athromboembolism. Thrombosis, thrombus, and the prefix thrombo- all come from the Greek thrombos meaning a lump or clump, or a curd or clot of milk. See entries also to:Cavernous sinus thrombosis;Renal vein thrombosis. And see:Deep Vein Thrombosisand Pulmonary Embolism.
