eructation
Noun
Meaning
The act of belching wind from the stomach; a belch.
A violent belching out or emitting, as of gaseous or other matter from the crater of a volcano, geyser, etc.
Source: Webster's dictionarySynonyms
Antonyms
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Examples
Although the article doesn't specify whether the methane is released by flatulence or eructation, it appears the headline-writer assumes it's through flatulence.
Secondly, studies aiming to quantify the total volume of gas produced by IBS patients (some including gas emitted from the mouth by eructation) have consistently failed to demonstrate increased volumes compared to healthy subjects.
This is emitted from the mouth by eructation (burping) and is normal.