noun, plural fla·tus·es.

  1. intestinal gas produced by bacterial action on waste matter in the intestines and composed primarily of hydrogen sulfide and varying amounts of methane.

noun plural -tuses

  1. gas generated in the alimentary canal

1660s, from Latin flatus “a blowing,” from flare “to blow” (see blow (v.1)).


  1. Gas generated in or expelled from the digestive tract, especially from the stomach or intestines.
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