coprophagia n.

"the eating of feces," 1875, originally in reference to insane persons or animals, from Modern Latin coprophagus, from Greek koprophagos "dung-eating," from kopros "dung" (see copro-) + -phagos "eating" (from PIE root *bhag- "to share out, apportion; to get a share"). Related: Coprophagous "feeding upon dung or filth" (1826, in reference to beetles); coprophagic (1876); coprophagist (1887).

word-forming element indicating "dung, filth, excrement," before vowels copr-, from Latinized form of Greek kopros "dung," from PIE root *kekw- "excrement." Hence, coprology "study of obscene literature" (1856).

Proto-Indo-European root meaning "to share out, apportion; to get a share."

It forms all or part of: aphagia; Bhagavad-Gita; baksheesh; esophagus; nebbish; pagoda; -phage; phago-; -phagous; porgy; sarcophagus.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit bhajati "assigns, allots, apportions, enjoys, loves," bhagah "allotter, distributor, master, lord," bhaksati "eats, drinks, enjoys;" Persian bakhshidan "to give;" Greek phagein "to eat," literally "to have a share of food;" Old Church Slavonic bogatu "rich."