To cause an embolism; to block a blood vessel with an embolus, or to perform an embolization procedure.
From Greek 'embolos' (wedge) + '-ize' (verb-forming suffix). In medical usage, it describes the action of something becoming wedged in a vessel.
Doctors can actually 'embolize' vessels on purpose now—they intentionally insert tiny devices to cut off blood to dangerous tumors, turning a dangerous accident into a lifesaving medical technique!
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