em-bo-lus(em'ba-les)

n. pl. em-bo-li(-li) A mass, such as an air bubble, a detached blood clot, or a foreign body, that travels through the bloodstream and lodges so as to obstruct or occlude a blood vessel.

embolus(em buh luhs) Pathology. undissolved material carried by the blood and impacted in some part of the vascular system, as thrombi or fragments of thrombi, tissue fragments, clumps of bacteria, protazoan parasites, fat globules, or gas bubbles. Dictionary.com Unabridged(vl.1)

embolism (em'bo'liz'um) n., Med. The blockage of a blood vessel, as by an air bubble or a detached clot. Based on the Random House Unabridged Dictionary * Random House, Inc.

embolization -ization or -isation  suff. action, process, or result of doing or making: colonization. American Heritage Dictionary * Dictionary of the English Language., Fourth Edition Houghton Mifflin Comp. 2004