Definition of flatus in English:


Line breaks: fla¦tus
Pronunciation: /ˈfleɪtəs


[mass noun] technical
Gas in or from the stomach or intestines, produced by swallowing air or by bacterial fermentation.
More example sentences
  • Failure to pass flatus or feces suggests intestinal obstruction.
  • The bacterial activity also produces the C02 associated with increased flatus.
  • However, fever, nausea, increased flatus and chronic diarrhea with malabsorption may occur.


mid 17th century: from Latin, literally 'blowing', from flare 'to blow'.

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