(n)thrombosis of a vein without prior inflammation of the vein; associated with sluggish blood flow (as in prolonged bedrest or pregnancy or surgery) or with rapid coagulation of the blood, Syn.venous thrombosis
‖n. [ NL. See Thrombus. ] (Med.) The obstruction of a blood vessel by a clot formed at the site of obstruction; -- distinguished from embolism, which is produced by a clot or foreign body brought from a distance. -- Throm*bot"ic a. [1913 Webster]