aneurysm

An aneurysm is a blood-filled sac in the weakened wall of a blood vessel or the heart. (noun)

An abnormal outward bulging of one of the blood vessels in the brain is an example of an aneurysm.

See aneurysm in Webster's New World College Dictionary

noun

a sac formed by local enlargement of the weakened wall of an artery, a vein, or the heart, caused by disease or injury

Related Forms:

See aneurysm in American Heritage Dictionary 4

also an·eu·rism (ănˈyə-rĭzˌəm)

noun

A localized, pathological, blood-filled dilatation of a blood vessel caused by a disease or weakening of the vessel's wall.

Related Forms:

Learn more about aneurysm

» aneurysm medical definition

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