The Collaborative International Dictionary of English v.0.48:
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. [1913 Webster]WordNet (r) 3.0 (2006):
ingestion n 1: the process of taking food into the body through the mouth (as by eating) [syn: consumption, ingestion, intake, uptake]