an·​eu·​rysm | \ ˈan-yə-ˌri-zəm \
variants: or less commonly aneurism

Definition of aneurysm

: an abnormal blood-filled bulge of a blood vessel and especially an artery resulting from weakening (as from disease) of the vessel wall

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Other Words from aneurysm

aneurysmal \ ˌan-​yə-​ˈriz-​məl \ adjective

Examples of aneurysm in a Sentence

Recent Examples on the Web

That's a significant and pleasantly surprising development given that Farquhar, 31, was hospitalized in critical condition after the hemorrhage that resulted from a ruptured aneurysm on April 20. Gabe Lacques, USA TODAY, "Danny Farquhar released from hospital; doctor expects White Sox reliever will pitch again," 7 May 2018 He was diagnosed with a hemorrhage caused by a ruptured aneurysm, needed emergency brain surgery and spent 2 ½ weeks in intensive care. Colleen Kane,, "White Sox's Danny Farquhar posts video of himself throwing during recovery from brain hemorrhage," 20 June 2018 The teenager, Alyssa Gilderhus, suffered a ruptured brain aneurysm on Christmas morning in 2016, and needed emergency surgery but eventually grew tired of the Mayo Clinic’s rehab facilities. Brian Flood, Fox News, "CNN, Mayo Clinic at war over report on teen who 'broke out of' esteemed hospital," 15 Aug. 2018 When Alyssa Gilderhus was hospitalized following a ruptured brain aneurysm on December 25, 2016, the neurosurgeons at the Mayo Clinic in Rochester, Minnesota, saved her life. Emma Sarran Webster, Teen Vogue, "Minnesota Teen's Family Alleges She Was "Medically Kidnapped" By Mayo Clinic," 14 Aug. 2018 The White Sox pitcher, who suffered a ruptured brain aneurysm in April, is working toward a comeback. David Haugh, The Seattle Times, "Laughter, optimism surround ex-Mariner Danny Farquhar after brain aneurysm," 17 July 2018 What a moment: Danny Farquhar returns to the mound to throw out the first pitch six weeks after suffering a brain aneurysm and is joined by his #WhiteSox teammates and doctors from Rush. Casey L Moore, USA TODAY, "White Sox's Danny Farquhar throws ceremonial first pitch six weeks after brain hemorrhage," 1 June 2018 Numbers suggest ruptured brain aneurysms prove fatal in about 40 percent of cases, and 66 percent of survivors demonstrate some permanent neurological deficit, according to the Brain Aneurysm Foundation. David Haugh,, "Operating on Danny Farquhar's brain didn't change what was in White Sox pitcher's heart," 12 July 2018 The companies uses medical images of the organ that is to be operated on, such as a heart with a structural defect or a brain with an aneurysm, to design the replica. Margeaux Sippell,, "A 3-D printing factory will make replica human organs in Boston," 7 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'aneurysm.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of aneurysm

15th century, in the meaning defined above

History and Etymology for aneurysm

Greek aneurysma, from aneurynein to dilate, from ana- + eurynein to stretch, from eurys wide — more at eury-

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Statistics for aneurysm

Last Updated

13 Jan 2019

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Time Traveler for aneurysm

The first known use of aneurysm was in the 15th century

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More Definitions for aneurysm


variants: also aneurism \ ˈan-​yə-​ˌriz-​əm \

Medical Definition of aneurysm

: an abnormal blood-filled dilatation of a blood vessel and especially an artery resulting from disease of the vessel wall

Other Words from aneurysm

aneurysmal also aneurismal \ ˌan-​yə-​ˈriz-​məl \ adjective
aneurysmally \ -​ē \ adverb

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More from Merriam-Webster on aneurysm

Rhyming Dictionary: Words that rhyme with aneurysm

Spanish Central: Translation of aneurysm

Nglish: Translation of aneurysm for Spanish Speakers

Britannica English: Translation of aneurysm for Arabic Speakers Encyclopedia article about aneurysm

Comments on aneurysm

What made you want to look up aneurysm? Please tell us where you read or heard it (including the quote, if possible).


tremendous in size, volume, or degree

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