Emboli:Something that travels through the bloodstream, lodges in a blood vessel and blocks it. Examples ofemboliare a detachedblood clot, a clump of bacteria, and foreign material such as air.
Pulmonary emboli areblood clotsthat have 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.
Emboli is the plural ofembolus, a word that comes from the Greek "embolos" meaning a wedge or plug. "Embolos" was derived from "en" (in) + "ballein" (to throw) so emboli are something thrown in.
