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the involuntary ejection of air and gases from the stomach through the mouth as a result of spasms of the gastric pylorus with simultaneous reflex muscle contractions in the stomach, diaphragm, and abdomen. Eructation in healthy persons is episodic, occurring, for example, only with overeating.

Regularly occurring, loud eructation arises as a result of swallowing air, most often in neurotics. Frequent eructation may be a symptom of a gastric disease, for example, chronic gastritis or an ulcer, or of diseases of other organs in the abdominal cavity, for example, the liver or gallbladder. Occasionally, food particles are ejected from the stomach along with gases and air; this is called regurgitation and is especially frequent with nursing infants who overeat.

Sour eructation is accompanied by ejection of gastric juice, and bitter eructation, by ejection of bile. The odor of rotten eggs is noticeable with eructation when food masses are stuck in the stomach as a result of pyloric stenosis; the odor indicates putrefaction in the stomach. Eructation is treated by healing the underlying cause.

References in periodicals archive ?
So cutting down on livestock eructations would go a long way.
The encrustations and eructations, the meting out of days in random losses and accretions, the lint and the lust--ho would have expected all that to be the last taboo?
An 1842 publication, The Cultivator, reminded farmers that "good fences prevent eructations of bile among neighbors, contribute much to the good appearance of the farm, prevent the destruction of crops, and check in the bud that disposition to live at large which exists in most animals.
And only the decayed duck having flown in splashed into the swamp alongside the catafalque of my heaven splashing with my great-grandparents' memories from the days of serfdom which crawled after everyone like a wet tail covered their windows from the wind, through which truck lights penetrated, the noisy rumble of thunder horrible eructations of the skies and collisions of trains and burned black-skinned corpses, ships where coca boils tar for us: pour me out into containers where I'll cool, wash me down with strong tea and if my entrails hurt, drink something slippery but not from my own work, because I was hard to digest, was sick with ulcers, bled ruminating on the intestinal sores of childhood, which were made by careless people, whom I swallowed