aneurysm (n.)youdaoicibaDictYouDict[aneurysm 词源字典]
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" (see eury-).[aneurysm etymology, aneurysm origin, 英语词源]