D defs.my
Entry 1 sense Webster, 1913

Thrombosis

/thräm-bōs'-əs/ · Throm·bo·sis · IPA /θɹɑmˈboʊsɪs/
01 n. The obstruction of a blood vessel by a clot formed at the site of obstruction; -- distinguished from embolism, which is produced by a clot …
  1. 1.
    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.(Med.)