aneurysm

noun

an·​eu·​rysm ˈan-yə-ˌri-zəm 

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

aneurysmal

ˌan-yə-ˈriz-məl 

adjective

Examples of aneurysm in a Sentence

Recent Examples on the Web

The actress took a six-month hiatus from the series, due in part to her brain aneurysm diagnosis, and returned in February. —Edward Segarra, USA Today, 29 Apr. 2026

Storms shared an Instagram post that she was diagnosed with an aneurysm on the right side of her brain in October 2025. —Charna Flam, PEOPLE, 28 Apr. 2026

Ultimately, John went and lay down in a guest room for half of the party, drove himself home and died within the next 12 hours from a brain aneurysm. —Rebecca Edmisten, Mercury News, 22 Apr. 2026

However, the medical examiner found no evidence of a ruptured splenic artery aneurysm. —Cara Tabachnick, CBS News, 14 Apr. 2026

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

Rhymes for aneurysm

• alyssum
• cataclysm

Medical Definition

aneurysm

noun

an·​eu·​rysm

variants also aneurism

ˈan-yə-ˌriz-əm 

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

aneurysmal adjective

also aneurismal

ˌan-yə-ˈriz-məl 

aneurysmally

-ē 

adverb