aneurysmleft: normal abdominal aorta
right: abdominal aortic aneurysm
an·eu·rysm
also an·eu·rism (ăn′yə-rĭz′əm)n. An abnormal, blood-filled sac formed by dilation of the wall of a blood vessel or heart ventricle, most commonly the abdominal aorta and intracranial arteries, resulting from disease or trauma to the wall, as in atherosclerosis.
[Middle English aneurisme, ultimately from Greek aneurusma, from aneurein, to dilate : ana-, throughout; see ana- + eurus, wide.]
an′eu·rys′mal (-məl) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
aneurysm
(ˈænjəˌrɪzəm) or aneurism
n (Medicine) a sac formed by abnormal dilation of the weakened wall of a blood vessel
[C15: from Greek aneurusma, from aneurunein to dilate, from eurunein to widen]
ˌaneuˈrysmal, ˌaneuˈrismal, ˌaneurysˈmatic, ˌaneurisˈmatic adj
ˌaneuˈrysmally, ˌaneuˈrismally, ˌaneurysˈmatically, ˌaneurisˈmatically adv
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
an•eu•rysm
or an•eu•rism
(ˈæn yəˌrɪz əm)
n. a permanent cardiac or arterial dilatation usu. caused by weakening of the vessel wall.
[1650–60; < Greek
aneúrysma dilation, derivative (with
-(s)ma n. suffix of result) of
aneurýnein to dilate (see
an-
3,
eury-)]
an`eu•rys′mal, an`eu•ris′mal, adj.
an`eu•rys′mal•ly, an`eu•ris′mal•ly, adv.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
an·eu·rysm
(ăn′yə-rĭz′əm) A swelling in the wall of an artery or vein caused by disease or injury.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
aneurism, aneurysm
a disease of the artery wall that causes a localized dilatation of the artery and a pulsating tumor.
See also: Blood and Blood Vessels-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.