Definition of reingestion in US English:

reingestion

noun

Zoology
  • The ingestion of material ejected or secreted from the body; specifically coprophagy or refection as practised by rabbits and some other mammals.

Origin

Mid 19th century; earliest use found in William Carpenter (1813–1885), biologist and university administrator. From re- + ingestion.

Pronunciation

reingestion

/ˌriːɪnˈdʒɛstʃn/