digestion

noun

di·​ges·​tion dī-ˈjes-chən 

də-, 

-ˈjesh-

: 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

These important nutrients help slow digestion and maintain steady blood sugar levels. —Chelsea Rae Bourgeois, Health, 29 Nov. 2025

Absorbs more slowly; larger molecules need more digestion. —Anna Giorgi, Verywell Health, 28 Nov. 2025

The tea is made with just organic coriander and organic cumin, which both soothe the stomach and support digestion. —Alaina Chou, Bon Appetit Magazine, 27 Nov. 2025

Tomasino recommends aiding digestion with some physical activity, such as cleaning up or going on a walk with family. —Lauren J. Young, Scientific American, 25 Nov. 2025

Word History

First Known Use

14th century, in the meaning defined above

Rhymes for digestion

• congestion
• ingestion
• suggestion
• gestion
• question
• indigestion

Kids Definition

digestion

noun

di·​ges·​tion dī-ˈjes-chən 

də-

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

Medical Definition

digestion

noun

di·​ges·​tion dī-ˈjes(h)-chən, də- 

: 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