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

Crouch, who suffered a debilitating brain aneurysm a decade ago, also has Medicare, which covers people who are 65 or older or have disabilities. —Sam Whitehead, CBS News, 9 Apr. 2026

But using three different mouse models, the Michigan team demonstrated that the common type of fat plays a direct role in aneurysm development, and that lowering triglyceride levels with certain drugs can stop them from forming and rupturing. —Brianna Abbott, STAT, 7 Apr. 2026

His daughter, Brittany Tucker, died in 2019 after suffering a brain aneurysm at the age of 30. —Katy Golvala, Hartford Courant, 5 Apr. 2026

Robotic assistance produced high-quality imaging that met all diagnostic requirements for conditions such as aneurysms and arterial stenosis. —Mrigakshi Dixit, Interesting Engineering, 23 Mar. 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