- a permanent cardiac or arterial dilatation usually caused by weakening of the vessel wall.
Origin of aneurysm
Examples from the Web for aneurysmal
Historical Examples of aneurysmal
Aneurysmal varix may occur in the neck as a result of stabs or bullet wounds.
Sometimes the arterial vessels are so dilated as to impart to the tumour an aneurysmal pulsation and bruit.
- a sac formed by abnormal dilation of the weakened wall of a blood vessel
Word Origin for aneurysm
early 15c., from Medieval Latin aneurisma, from Greek aneurysmos "dilation," from aneurynein "to dilate," from ana- "up" (see ana-) + eurynein "widen," from eurys "broad, wide," from PIE root *were- "wide, broad" (cf. Sanskrit uruh "broad, wide").
- A localized, blood-filled dilation of a blood vessel caused by disease or weakening of the vessel wall.
- A localized, blood-filled dilation of a blood vessel or cardiac chamber caused by disease, such as arteriosclerosis, or weakening of the vessel or chamber wall. A ruptured aneurysm results in hemorrhage and is often fatal.