Origin of flatusClassical Latin from flare, to blow: see blast
Origin of flatusLatin flātus wind, fart from flāre to blow ; see bhlē- in Indo-European roots.
(countable and uncountable, plural flatuses or flatus)
- (uncountable) Gas generated in the digestive tract.
- (countable) Expulsion of such gas through the anus.
- plural form of flatus
Borrowed into English around 1660–1670; from Latin flātus (“blowing, wind”), from flāre (“to blow”).