what is thrombosis
[edit on Wikidata] Thrombosis (Greek: Î¸ÏÏÎ¼Î²ÏÏÎ¹Ï) is the formation of a blood clot (thrombus; Greek: Î¸ÏÏÎ¼Î²Î¿Ï) inside a blood vessel, obstructing the flow of blood through the circulatory system. When a blood vessel is injured, the body uses platelets (thrombocytes) and fibrin to form a blood clot to prevent blood loss.