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

Getting a mix of the two types of fiber benefits healthy digestion and protects against constipation. —Kaitlin Sullivan, NBC news, 29 Apr. 2026

Pair it with protein or fiber to help slow down digestion and blunt its impact on blood sugar. —Jillian Kubala, Health, 29 Apr. 2026

These nutrients can help support metabolism, digestion, hydration, and overall energy. —Sara Hoffman, Verywell Health, 28 Apr. 2026

As gut health becomes a growing focus in the wellness world, experts point to the microbiome — the trillions of bacteria living in the digestive tract — as a key player in everything from digestion to immunity. —Deirdre Bardolf, FOXNews.com, 27 Apr. 2026

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