an·​eu·​rysm | \ ˈan-yə-ˌri-zəm How to pronounce aneurysm (audio) \
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

Keep scrolling for more

Other Words from aneurysm

aneurysmal \ ˌan-​yə-​ˈriz-​məl How to pronounce aneurysmal (audio) \ adjective

Examples of aneurysm in a Sentence

Recent Examples on the Web

The cause was a thoracic aortic aneurysm, said a daughter, Lida Verner. Benjamin Gordon, Washington Post, "Community deaths," 25 Aug. 2019 Ball died Wednesday at age 27 after being in a coma since December with a brain aneurysm. Jerry Mcdonald, The Mercury News, "Dishing dirt one last time on Raiders-Chiefs rivalry," 11 Sep. 2019 After Clarke penned an emotional essay revealing her struggles with brain aneurysms for the first time, Headey proudly supported her co-star with a tribute on Instagram. Erica Gonzales, Harper's BAZAAR, "Lena Headey Supports Game of Thrones Co-Star Emilia Clarke After She Opened Up About Her Brain Aneurysms," 22 Mar. 2019 Currently, when a person is diagnosed with a blockage or aneurysm in the brain, surgeons insert a thin wire into an artery near the leg or groin, according to an MIT press release. Jason Daley, Smithsonian, "‘Robotic Worm’ Could Be the Future of Stroke Care," 30 Aug. 2019 Ruptured brain aneurysms occur when there is a bulging spot on an artery in the brain, which weakens over time as blood flows against it, according to the Brain Aneurysm Foundation. Jason Duaine Hahn,, "MLB's Danny Farquhar Released from Hospital, Expected to Play Again, After Brain Aneurysm During Game," 8 May 2018 The police, Feher said, saw no sign of a heart attack or aneurysm. Neil Genzlinger,, "Agnes Heller, outspoken Hungarian philosopher, at 90," 31 July 2019 But in 2015, Beth’s father, Bill Giles, died at 77 of a heart aneurysm. Don Norcross, San Diego Union-Tribune, "Over-The-Line a homecoming for couple now living in Hawaii," 11 July 2019 Emilia Clarke opened up about her brain aneurysms and surgeries in a sit-down interview with CBS Sunday Morning that aired yesterday. Erica Gonzales, Harper's BAZAAR, "Emilia Clarke Shared Rare Photos From Her Brain Surgeries After Suffering Two Aneurysms," 8 Apr. 2019

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.

See More

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-

Keep scrolling for more

Learn More about aneurysm

Statistics for aneurysm

Last Updated

7 Oct 2019

Look-up Popularity

Time Traveler for aneurysm

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

See more words from the same century

Keep scrolling for more

More Definitions for aneurysm


variants: also aneurism \ ˈan-​yə-​ˌriz-​əm How to pronounce aneurism (audio) \

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 How to pronounce aneurismal (audio) \ adjective
aneurysmally \ -​ē How to pronounce aneurysmally (audio) \ adverb

Keep scrolling for more

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).


tired or exhausted

Get Word of the Day daily email!

Test Your Vocabulary

Where in the World? A Quiz

  • peter bruegel tower of babel painting
  • What language does pajama come from?
Spell It

Can you spell these 10 commonly misspelled words?

Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!