Aneurysm, cardiac
Outpouching of an abnormally thin portion of the heart wall. An aneurysm is a localized widening (dilatation) of an artery, vein, or the heart. At the area of an aneurysm, there is typically a bulge and the wall is weakened and may rupture. The word “aneurysm” comes from the Greek “aneurysma” meaning “a widening.” Heart aneurysms tend to involve the left ventricle because the blood there is under greatest pressure.

Medical dictionary. 2011.

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  • Aneurysm — A localized widening (dilatation) of an artery, vein, or the heart. At the area of an aneurysm, there is typically a bulge and the wall is weakened and may rupture. The word “aneurysm” comes from the Greek “aneurysma” meaning “a widening.” * * *… …   Medical dictionary

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  • aneurysm — aneurysmal, aneurismal, adj. aneurysmally, aneurismally, adv. /an yeuh riz euhm/, n. Pathol. a permanent cardiac or arterial dilatation usually caused by weakening of the vessel wall. Also, aneurism. [1650 60; < Gk aneúrysma dilation, equiv. to… …   Universalium

  • Aneurysm, arterial — An aneurysm involving an artery. As opposed to a venous aneurysm or a cardiac aneurysm. An aneurysm is a localized widening (dilatation) of an artery, vein, or the heart. At the area of an aneurysm, there is typically a bulge and the wall is… …   Medical dictionary

  • Aneurysm, venous — An aneurysm involving a vein. As opposed to an arterial aneurysm or a cardiac aneurysm. An aneurysm is a localized widening (dilatation) of an artery, vein, or the heart. At the area of an aneurysm, there is typically a bulge and the wall is… …   Medical dictionary

  • Cardiac aneurysm — An outpouching of an abnormally thin portion of the heart wall. Cardiac aneurysms tend to involve the left ventricle because the blood there is under greatest pressure. * * * ventricular a …   Medical dictionary

  • aneurysm — an•eu•rysm or an•eu•rism [[t]ˈæn yəˌrɪz əm[/t]] n. pat a permanent cardiac or arterial dilatation usu. caused by weakening of the vessel wall • Etymology: 1650–60; < Gk aneúrysma dilation, der. (with (s)ma n. suffix of result) of aneurýnein to …   From formal English to slang

  • aneurysm — /ˈænjərɪzəm/ (say anyuhrizuhm) noun a permanent cardiac or arterial dilation usually caused by weakening of the vessel wall by diseases such as syphilis or arteriosclerosis. Also, aneurism. {Greek aneurysma dilatation} –aneurysmal, aneurismal… …   Australian English dictionary

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