An abnormal outward bulging of one of the blood vessels in the brain is an example of an aneurysm.
Origin of aneurysmModern Latin aneurisma from Classical Greek aneurysma from ana-, up + eurys, broad: see eury-
Origin of aneurysmMiddle English aneurisme ultimately from Greek aneurusma from aneurein to dilate ana- throughout ; see ana- . eurus wide
left: normal abdominal aorta
right: abdominal aortic aneurysm
From Ancient Greek ἀνεύρυσμα (aneurysma, “a widening, an opening”), from ἀνά (ana, “up”) + εὐρύς (eurys, “wide”).