n.
Variant: also an · eu · rism
Pronunciation: ' an-y ə - ˌ ri-z ə m
Function: noun
Etymology: Greek aneurysma, from aneurynein to dilate, from ana- + eurynein to stretch, from eurys wide ― more at EURY-
Date: 15th century
: an abnormal blood-filled bulge of a blood vessel and especially an artery resulting from weakening (as from disease) of the vessel wall
– an · eu · rys · mal \ ˌ an-y ə - ' riz-m ə l \ adjective