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

Examples of aneurysm in a Sentence

Recent Examples on the Web
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Tyler dedicates this dance to his mom, who died suddenly of a brain aneurysm in 2020, but also to moms everywhere. — Maggie Fremont, Vulture, 21 Oct. 2026 Cameron lost his mother, Andrea, to a brain aneurysm in 2020. — Entertainment Weekly, 21 Oct. 2026 The announcement came during the show's Dedication Night episode, when Cameron and Burgess performed a contemporary routine dedicated to mothers, including Cameron's late mother, Andrea, who died in 2020 after a brain aneurysm. — ABC News, 20 Oct. 2026 Similarly, people who have known brain aneurysms, prior strokes or serious neurological conditions should consult their physicians before going on these rides. — Katia Hetter, CNN Money, 16 Oct. 2026 See All Example Sentences for aneurysm

Word History

Etymology

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

First Known Use

15th century, in the meaning defined above

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

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Cite this Entry

“Aneurysm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aneurysm. Accessed 26 Oct. 2026.

Medical Definition

aneurysm

noun
an·​eu·​rysm
: an abnormal blood-filled dilatation of a blood vessel and especially an artery resulting from disease of the vessel wall
aneurysmal adjective

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