The Collaborative International Dictionary
Predigestion
Predigestion \Pre`di*ges"tion\, n.
Digestion too soon performed; hasty digestion. [Obs.]
--Bacon.(Med.) Artificial digestion of food for use in illness or impaired digestion.
Wiktionary
predigestion
n. The partial hydrolysis etc. of food, by enzymes or other materials, prior to normal digestion