1) Digest 2) Digest beforehand 
• (v. t.) To subject (food) to predigestion or artificial digestion.
Pre`di·gest' transitive verb (Medicine) To subject (food) to predigestion or artificial digestion. 
[v] - digest (food) beforehand, as of ruminants
to treat (food) by an artificial process analogous to digestion so that, when taken into the body, it is more easily digestible. · to make simpler or plainer, as for easier understanding.