From Big Medical Encyclopedia

BLOOD CLOT (Greek thrombos a piece, a clot) — the condensed mass of the turned blood or a lymph formed it is intravital in a circulatory or lymphatic bed. Depending on the place and features of formation of T. can be the cause of different types of disturbances of blood circulation (see), heart attacks of bodies (see the Heart attack), thromboembolisms (see), and also one of the main displays of thrombophlebitis (see) and a thrombovasculitis (see).

Blood clots can be white, red, mixed (layered) and hyaline that generally is defined by the speed of a thrombogenesis.

See also Thrombosis.