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aneurismal

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an⋅eu⋅rysm

  [an-yuh-riz-uhm]
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–noun Pathology.
a permanent cardiac or arterial dilatation usually caused by weakening of the vessel wall.
Also, an⋅eu⋅rism.

Origin:
1650–60; < Gk aneúrysma dilation, equiv. to aneurys- (var. s. of aneurýnein to dilate; see an- 3 , eury- ) + -ma n. suffix

Related forms:
an⋅eu⋅rys⋅mal, an⋅eu⋅ris⋅mal, adjective
an⋅eu⋅rys⋅mal⋅ly, an⋅eu⋅ris⋅mal⋅ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

aneurysm 
1611, from Gk. aneurysmos "dilation," from aneurynein "to dilate," from ana- "up" + eurynein "widen," from eurys "broad."
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: an·eu·rysm
Variant: also an·eu·rism /'an-y&-"riz-&m/
Function: noun
: an abnormalblood-filled dilatation of a blood vessel and especially an artery resulting from disease of the vessel wall —an·eu·rys·mal also an·eu·ris·mal /"an-y&-'riz-m&l/ adjective —an·eu·rys·mal·ly /-E/ adverb
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

aneurysm an·eu·rysm or an·eu·rism (ān'yə-rĭz'əm)
n.
A localized, blood-filled dilation of a blood vessel caused by disease or weakening of the vessel wall.

an'eu·rys'mal (-məl) or an'eu·ris·mat'ic (-māt'ĭk) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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