eructation

n.
The act or an instance of belching.

eructative e·ruc'ta·tive (ĭ-rŭk'tə-tĭv) adj.

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).

an act or instance of belching