digestion

noun

di·​ges·​tion dī-ˈjes-chən How to pronounce digestion (audio)
də-, 
-ˈjesh-
Synonyms of digestionnext
: the action, process, or power of digesting: such as
a
: the process of making food absorbable by mechanically and enzymatically breaking it down into simpler chemical compounds in the digestive tract
b
: the process in sewage treatment by which organic matter in sludge is decomposed by anaerobic bacteria with the release of a burnable mixture of gases

Examples of digestion in a Sentence

an enzyme that aids in the digestion of protein She began to suffer from poor digestion as she grew older.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Asking viewers to contemplate childhood pain while monitoring digestion requires two kinds of attention that Duffield only intermittently brings together. — Alison Foreman, IndieWire, 14 Oct. 2026 Soluble fiber becomes a gel during the digestion process and slows digestion. — Vanessa Caceres, Verywell Health, 13 Oct. 2026 A week of digestion held above $177 and the next push carried it through $184. — Josh Brown,sean Russo, CNBC, 12 Oct. 2026 While whole wheat toast offers fiber to slow digestion and lessen blood sugar spikes, white bread is a refined grain, which means most of the fiber is removed. — Trista Chan, HEALTH, 12 Oct. 2026 See All Example Sentences for digestion

Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of digestion was in the 14th century

Browse Nearby Words

Cite this Entry

“Digestion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/digestion. Accessed 20 Oct. 2026.

Kids Definition

digestion

noun
: the process by which food is broken down into simpler forms in the body by mechanical and enzymatic means

Medical Definition

: the action, process, or power of digesting
especially : the process of making food absorbable by mechanically and enzymatically breaking it down into simpler chemical compounds in the digestive tract

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