Source : Webster's Revised Unabridged Dictionary (1913)

Angioma \An`gi*o"ma\, n.; L. pl. {-omata}. [NL.; angio- + -oma.]
   (Med.)
   A tumor composed chiefly of dilated blood or lymph vessels.
   -- {An`gi*om"a*tous}, a.

Source : WordNet®

angiomatous
     adj : of or related to or having a tumor of the kind known as an
           angioma