Thrombus \Throm"bus\, n.; pl. {Thrombi}. [NL., fr. Gr. ? a lump,
a clot of blood.] (Med.)
(a) A clot of blood formed of a passage of a vessel and
remaining at the site of coagulation.
(b) A tumor produced by the escape of blood into the
subcutaneous cellular tissue.
[1913 Webster]