The obstruction or blockage of blood vessels or lymph vessels by a clot or other material.
From Greek 'angeion' (vessel) + 'emphraxis' (stoppage, obstruction). Rare medical term combining vessel terminology with the Greek root for blocking or plugging.
This is essentially what happens during a stroke or heart attack—a clot gets wedged in an artery and cuts off blood flow, which is why doctors rush to use 'clot-busting' drugs to clear the blockage before permanent damage occurs.
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