Source : Webster's Revised Unabridged Dictionary (1913)

Aneurismal \An`eu*ris"mal\, a. (Med.)
   Of or pertaining to an aneurism; as, an aneurismal tumor;
   aneurismal diathesis. [Written also {aneurysmal}.]

Source : WordNet®

aneurysmal
     adj : relating to or affected by an aneurysm [syn: {aneurismal}, {aneurysmatic},
            {aneurismatic}]