Source : Webster's Revised Unabridged Dictionary (1913)

Omphalomesenteric \Om`pha*lo*mes`en*ter"ic\, a. [Omphalo- +
   mesenteric.] (Anat.)
   Of or pertaining to the umbilicus and mesentery;
   omphalomesaraic; as, the omphalomesenteric arteries and veins
   of a fetus.