Source : Webster's Revised Unabridged Dictionary (1913)

Ingestion \In*ges"tion\, n. [L. ingestio: cf. F. ingestion.]
   (Physiol.)
   The act of taking or putting into the stomach; as, the
   ingestion of milk or other food.

Source : WordNet®

ingestion
     n : the process of taking food into the body through the mouth
         (as by eating) [syn: {consumption}, {intake}, {uptake}]