Etymology
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ingestion (n.)

"action of ingesting," 1610s, from Late Latin ingestionem (nominative ingestio) "a pouring in," noun of action from past participle stem of ingerere "pour in" (see ingest).

updated on November 28, 2015

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Definitions of ingestion from WordNet

ingestion (n.)
the process of taking food into the body through the mouth (as by eating);
Synonyms: consumption / intake / uptake
From wordnet.princeton.edu, not affiliated with etymonline.