embolus

[em-buh-luhs]
noun, plural emboli [em-buh-lahy] . 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, protozoan parasites, fat globules, or gas bubbles.

Origin:
1660–70; < Latin: piston < Greek émbolos stopper, equivalent to em- em-2 + bólos a throw, akin to bállein to throw

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World English Dictionary
embolus (ˈɛmbələs)
 
n , pl -li
Compare thrombus material, such as part of a blood clot or an air bubble, that is transported by the blood stream until it becomes lodged within a small vessel and impedes the circulation
 
[C17: via Latin from Greek embolos stopper, from emballein to insert, from ballein to throw; see emblem]

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Etymonline
Word Origin & History

embolus
1660s, from L. embolus piston of a pump, from Gk. embolos peg, stopper. Medical sense is from 1866.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

embolus em·bo·lus (ěm'bə-ləs)
n. pl. em·bo·li (-lī')
A mass, such as an air bubble, a detached blood clot, or a foreign body, that travels in the bloodstream and lodges in a blood vessel, thus serving to obstruct or occlude such a vessel.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
embolus   (ěm'bə-ləs)  Pronunciation Key 
Plural emboli (ěm'bə-lī)
See embolism.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The embolus sits at the end of a loop called the conductor.
The pulmonary arteries are normally developed, patent and without thrombus or embolus.
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