-tə(r) noun
( -s )
1. : one that digests or makes a digest
2. : a medicine or an article of food that aids digestion
3.
a. also di·ges·tor “ : a vessel or apparatus for digesting : cooker , autoclave
b. : a vessel in which cellulosic pulp is produced usually from wood chips by cooking with chemicals under pressure
c. : a covered tank in which digestion of sewage sludge is carried out
4. : recoverer