Source : Webster's Revised Unabridged Dictionary (1913)

Epigastric \Ep`i*gas"tric\, a. [Gr. ? over the belly; 'epi` upon
   + ? belly: cf. F. ['e]pigastrique.]
   1. (Anat.) Pertaining to the epigastrium, or to the
      epigastric region.

   2. (Zo["o]l.) Over the stomach; -- applied to two of the
      areas of the carapace of crabs.

   {Epigastric region}. (Anat.)
      (a) The whole upper part of the abdomen.
      (b) An arbitrary division of the abdomen above the
          umbilical and between the two hypochondriac regions.

Source : WordNet®

epigastric
     adj 1: of or relating to the anterior walls of the abdomen;
            "epigastric artery"
     2: lying on or over the stomach