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

Causes include aneurysms, tumors and trauma and hypertension. —Madeleine Marr, Miami Herald, 3 Nov. 2025

If it is felt that the treatment risk is lower than the future risk of aneurysm rupture, then treatment of an unruptured brain aneurysm may be recommended. —Michael Nied, PEOPLE, 28 Oct. 2025

In the brain, MRI can differentiate between white matter and gray matter and can also be used to diagnose aneurysms and tumors. —Jenna Prestininzi, Freep.com, 28 Oct. 2025

In 2022, at age 48, Wahl would die suddenly of an aortic aneurysm while covering the FIFA World Cup in Qatar. —Kansas City Star, 27 Oct. 2025

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