血栓症
Thrombosis \Throm*bo"sis\, 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.
thrombosis
n : the formation or presence of a thrombus (a clot of
coagulated blood attached at the site of its formation)
in a blood vessel