1. Affected with flatus or gases generated in the alimentary canal; windy.
2. Generating, or tending to generate, wind in the stomach. Vegetables abound more with aerial particles than animal substances, and therefore are more flatulent. (Arbuthnot)
3. Turgid with flatus; as, a flatulent tumour.
4. Pretentious without substance or reality; puffy; empty; vain; as, a flatulent vanity. He is too flatulent sometimes, and sometimes too dry. (Dryden)
Origin: L. Flatus a blowing, flatus ventris windiness, flatulence, fr. Flare to blow: cf. F. Flatulent. See blow.