n. An abnormal blood-filled swelling of an artery or vein, resulting from a localized weakness in the wall of the vessel.
the GNU version of the Collaborative International Dictionary of English
n. a sac-like widening of a blood vessel.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a cardiovascular disease characterized by a saclike widening of an artery resulting from weakening of the artery wall
Word Usage
"Even more surprising, given the fear the word "aneurysm" strikes in patients with new diagnoses and their families, is that many small unruptured aneurysms are not treated."