Dictionary:

eructation

  (ĭ-rŭk-tā'shən, ē'rŭk-)

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The act or an instance of belching.

The act of bringing up air from the stomach, with a characteristic sound. Also known as belching.

The oral ejection of gas or air from the stomach; belching. A normal activity for ruminants who void gases, principally methane, produced by fermentation in the rumen. Interference with eructation in those species causes ruminal tympany or bloat (1).