Entry 1 sense Webster, 1913 Gastrohepatic · Gas·tro·he·pat·ic · IPA 01 a. Pertaining to the stomach and liver; hepatogastric; as, the gastrohepatic, or lesser, omentum. 1. Pertaining to the stomach and liver; hepatogastric; as, the gastrohepatic, or lesser, omentum.(Med.)