ingestion

noun

in·​ges·​tion in-ˈjes-chən How to pronounce ingestion (audio)
-ˈjesh-
: the act or process of taking in something for or as if for digestion : the act or process of ingesting something
A Cochrane review showed that ingestion of cranberry products may decrease the number of symptomatic urinary tract infections in women …Giovanni Montini et al.
Celiac disease is the immune-mediated response to ingestion of gluten from wheat, rye and barley that damages the small intestine.Valerie Putnam
After two years of almost manic ingestion of book after book—Montaigne, Milton, Seneca, Dante—he began to write Moby-Dick.Andrew Delbanco

Examples of ingestion in a Sentence

Recent Examples on the Web
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Symptoms often do not appear until 6 to 24 hours after ingestion. Alexandra Koch, FOXNews.com, 13 May 2026 People who experience mushroom poisoning may start seeing symptoms six to 24 hours after ingestion, which can start off mild but rapidly become fatal. Tim Fang, CBS News, 13 May 2026 The study also found that tadpoles in the pre-metamorphic stage had higher microplastic contamination than those closer to becoming frogs, and that heavier tadpoles showed lower concentrations — suggesting ingestion rates may shift as the animals grow. Ryan Brennan may 12, Fort Worth Star-Telegram, 12 May 2026 Heavier tadpoles also showed lower concentrations, suggesting ingestion decreases as the animals grow. Ryan Brennan, Sacbee.com, 12 May 2026 See All Example Sentences for ingestion

Word History

First Known Use

1620, in the meaning defined above

Time Traveler
The first known use of ingestion was in 1620

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Cite this Entry

“Ingestion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ingestion. Accessed 15 May. 2026.

Medical Definition

ingestion

noun
in·​ges·​tion in-ˈjes(h)-chən How to pronounce ingestion (audio)
: the taking of material (as food) into the digestive system

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