reingestion
/ˌriːɪnˈdʒɛstʃn/Chiefly Zoology
noun
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.