THROMBUS
thrombus
(noun) a blood clot formed within a blood vessel and remaining attached to its place of origin
Source: WordNet® 3.1
Etymology
Noun
thrombus (plural thrombi)
(hematology, pathology) A blood clot formed from platelets and other elements; that forms in a blood vessel in a living organism, and causes thrombosis or obstruction of the vessel at its point of formation or travel to other areas of the body.
Synonyms
• blood clot
Source: Wiktionary
Throm"bus, n.; pl. Thrombi. Etym: [NL., fr. Gr. (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.
Source: Webster’s Unabridged Dictionary 1913 Edition