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Updated September 03, 2013.

Definition: A narrowing of the arteries due to deposits that have collected in the lining of blood vessels. This can result in decreased blood flow. It plays a major role in myocardial infarction (heart attack) and stroke. Deposits can consist of cholesterol and fatty deposits, as well as other substances such as calcium, cellular waste products, and cells.

Also Known As: arteriosclerosis