also gastrointestinal, 1821, from gastro- + intestinal.
Entries linking to gastro-intestinal
gastro-
also gastero-, before vowels gastr-, scientific word-forming element meaning "stomach," from Greek gastro-, combining form of gaster (genitive gastros) "belly, paunch; womb" (see gastric). Also used in compounds in ancient Greek, as gastrobarys "heavy with child."
intestinal adj.
early 15c., from medical Latin intestinalis, from Latin intestinum "an intestine, gut" (see intestine).