or an·eu·rism

[an-yuh-riz-uh m]

Origin of aneurysm

1650–60; < Greek aneúrysma dilation, equivalent to aneurys- (variant stem of aneurýnein to dilate; see an-3, eury-) + -ma noun suffix
Related formsan·eu·rys·mal, an·eu·ris·mal, adjectivean·eu·rys·mal·ly, an·eu·ris·mal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for aneurysmal

Historical Examples of aneurysmal

  • Aneurysmal varix may occur in the neck as a result of stabs or bullet wounds.

    Manual of Surgery

    Alexis Thomson and Alexander Miles

  • Sometimes the arterial vessels are so dilated as to impart to the tumour an aneurysmal pulsation and bruit.

    Manual of Surgery

    Alexis Thomson and Alexander Miles

British Dictionary definitions for aneurysmal



  1. a sac formed by abnormal dilation of the weakened wall of a blood vessel
Derived Formsaneurysmal, aneurismal, aneurysmatic or aneurismatic, adjectiveaneurysmally, aneurismally, aneurysmatically or aneurismatically, adverb

Word Origin for aneurysm

C15: from Greek aneurusma, from aneurunein to dilate, from eurunein to widen
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for aneurysmal



early 15c., from Medieval Latin aneurisma, from Greek aneurysmos "dilation," from aneurynein "to dilate," from ana- "up" (see ana-) + eurynein "widen," from eurys "broad, wide," from PIE root *were- "wide, broad" (cf. Sanskrit uruh "broad, wide").

Online Etymology Dictionary, © 2010 Douglas Harper

aneurysmal in Medicine


  1. A localized, blood-filled dilation of a blood vessel caused by disease or weakening of the vessel wall.
Related formsan′eu•rysmal (-məl) null adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

aneurysmal in Science


  1. A localized, blood-filled dilation of a blood vessel or cardiac chamber caused by disease, such as arteriosclerosis, or weakening of the vessel or chamber wall. A ruptured aneurysm results in hemorrhage and is often fatal.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.