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thrombus vs. thrombosis

[ throm-buhs ]
  1. a fibrinous clot that forms in and obstructs a blood vessel, or that forms in one of the chambers of the heart.
[ throm-boh-sis ]
  1. intravascular coagulation of the blood in any part of the circulatory system, as in the heart, arteries, veins, or capillaries.

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