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Webster 1913 Edition

Noun.

Digestion too soon performed; hasty digestion.

[Obs.]

Bacon.

(Med.)

Artificial digestion of food for use in illness or impaired digestion.

Noun.

[pre and digestion.] Too hasty digestion.

Predigestion fills the body with crudities.

predigestion ‎(countable and uncountable, plural predigestions)

The partial hydrolysis etc. of food, by enzymes or other materials, prior to normal digestion