- Embolus
- : Something that travels through the bloodstream, lodges in a blood vessel and blocks it. Examples of emboli are a detached blood clot, a clump of bacteria, and foreign material such as air. A pulmonary embolus is a blood clot that has been carried through the blood into the pulmonary artery (the main blood vessel from the heart to the lung) or one of its branches, plugging that vessel. The word "embolus" comes from the Greek "embolos" meaning a wedge or plug. "Embolos" was derived from "en" (in) + "ballein" (to throw) so an embolus is something thrown in.
* * *1. A plug, composed of a detached thrombus or vegetation, mass of bacteria, or other foreign body, occluding a vessel. 2. SYN: emboliform nucleus. [G. embolos, a plug, wedge or stopper]- catheter e. coiled worm-shaped platelet and fibrin aggregates produced during vascular catheterization, originating on the catheter or its guide wire; embolization of the catheter itself.
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em·bo·lus 'em-bə-ləs n, pl -li -.lī an abnormal particle (as an air bubble) circulating in the blood compare THROMBUS* * *
n. (pl. emboli)material, such as a blood clot, fat, air, amniotic fluid, or a foreign body, that is carried by the blood from one point in the circulation to lodge at another point (see embolism).* * *
em·bo·lus (emґbo-ləs) pl. emґboli [Gr. embolos plug, from en in + ballein to throw] 1. a mass, which may be a blood clot or some other material, that is brought by the bloodstream through the vasculature, lodging in a vessel or bifurcation too small to allow it to pass, obstructing the circulation. See also embolism. 2. nucleus emboliformis.
Medical dictionary. 2011.