Source : Webster's Revised Unabridged Dictionary (1913)

Abdominal \Ab*dom"i*nal\, a. [Cf. F. abdominal.]
   1. Of or pertaining to the abdomen; ventral; as, the
      abdominal regions, muscles, cavity.

   2. (Zo["o]l.) Having abdominal fins; belonging to the
      Abdominales; as, abdominal fishes.

   {Abdominal ring} (Anat.), a fancied ringlike opening on each
      side of the abdomen, external and superior to the pubes;
      -- called also {inguinal ring}.