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 horse died of an aneurysm while warming up on the track, before he could be sold. — Robert McCoppin, Chicago Tribune, 25 July 2026

An aneurysm is a weakened or bulging artery wall, and coiling is a procedure used to block blood flow to the aneurysm, according to Johns Hopkins Medicine. — Charna Flam, PEOPLE, 23 July 2026

Kirsten Storms is sharing an update on her life after relocating to Tennessee, and suffering a brain aneurysm, amid a legal battle with her ex and fellow soap star, Brandon Barash. — Leigh Blickley, Entertainment Weekly, 20 July 2026

Unexplained sudden death, thoracic aneurysm, or dissection in a family member should prompt discussion of genetic testing and imaging of first-degree relatives, the experts said. — Elizabeth Cooney, STAT, 15 July 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

• threesome

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