Occlusion of a blood vessel by a clot (8)

I believe the answer is:

embolism

(Other definitions for embolism that I've seen before include "obstructive clot" , "Arterial obstruction" , "Blockage by a blood clot" , "Obstruction of a blood vessel as by clot or bubble" , "Blockage of an artery" .)

I've seen this clue in The Irish Times.

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