gastr-, gastro-, gaster-, gastero-, gastri-, -gastria-

(Greek: stomach, belly)

gastrohydrorrhea
Excretion into the stomach of a large amount of watery fluid containing neither hydrochloric acid, chymosin nor pepsin ferments.
gastroileostomy
gastrointestinal
gastrokinesograph
An instrument for recording graphically the movements of the stomach.
gastrolatry
The worship of one’s stomach.
gastrolith
gastrologer
gastrological
gastrologist
gastrology
gastrolysis
gastromalacia
Softening of the walls of the stomach.
gastromancy (s) (noun), gastromancies (pl)
1. Telling someone's fortune by listening to stomach sounds which were interpreted as words: Gastromancy often included ventriloquism, which sounded very low and hollow, making people think that it was coming from the stomach.
2. The art of fortune-telling by using a clear, "pot-bellied" glass bowl which was full of water and placed in front of candles: This form of gastromancy preceded crystall-ball gazing as another type of telling fortunes.
3. Etymology: from Greek gastromanteia, "divination by the belly"; consisting of gaster, "pot-belly" + mant-eia, "power of divination" or "fortune telling"

The element, manteia, or -mancy, is related to Latin mens, mentis, "mind, soul, feelings".

gastromantic (adjective), more gastromantic, most gastromantic
Descriptive of gurgling sounds from the stomach as a form of telling fortunes: "When Mike heard his brother's stomach rumblings, he said, 'Happy digestion, Brother!' "
gastromyxorrhea
Excessive secretion of mucus in the stomach. Synonym: myxorrhea gastrica.