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

Anyway, because of the *slightly* complex situation with the aneurysm (nothing bad, just not typical), it wasn’t coiled that weekend. —Ashley Hume, FOXNews.com, 15 Oct. 2025

Coiling is a procedure used to block blood flow to the aneurysm, which is a weakened or bulging artery wall, John Hopkins Medicine explains. —Cara Lynn Shultz, PEOPLE, 14 Oct. 2025

The surgery is done as a preventative to keep the aneurysm from rupturing. —J. Kim Murphy, Variety, 14 Oct. 2025

Lolita became the park’s main attraction, while Hugo died in 1980 from a brain aneurysm, possibly from the years of ramming his head into the tank known as the Whale Bowl. —Milena Malaver, Miami Herald, 13 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