Definition of "omphalomesenteric" []

• Of or pertaining to the umbilicus and mesentery. (adjective)

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• "—The visceral veins are the two vitelline or omphalomesenteric veins bringing the blood from the yolk-sac, and the two umbilical veins returning the blood from the placenta; these four veins open close together into the sinus venosus."
• "Blood islands have been seen in the area vasculosa in the omphalomesenteric vein and arteries, and in the dorsal aorta."