ANEURYSM

[an.eu.rysm] also an.eu.rism n [Gk aneurysma, fr. aneurynein to dilate, fr. ana- + eurynein to stretch, fr. eurys wide--more at eury-] (15c): an abnormal blood-filled dilatation of a blood vessel and esp. an artery resulting from disease of the vessel wall -- an.eu.rys.mal adj