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

While baby carrots can support good digestion and cell function, experts say this trend is unlikely to improve your sleep. —Stephanie Brown, Verywell Health, 5 Dec. 2025

The combo also delivers extra vitamin C and immune support, and may aid digestion and hydration. —Laura Schober, Health, 4 Dec. 2025

Research shows that proper hydration supports cognitive function and energy levels, and plays an essential role in digestion. —Dana Santas, CNN Money, 24 Nov. 2025

Taking a walk or doing light stretching can help digestion and steady blood sugar. —Lucy Notarantonio, MSNBC Newsweek, 24 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