'Thrombus' definitions:
Definition of 'thrombus'
From: WordNet
noun
A blood clot formed within a blood vessel and remaining attached to its place of origin
Definition of 'Thrombus'
From: GCIDE
- 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]