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

Eat fruit two to three hours before bedtime to allow for digestion. — Sohaib Imtiaz, Verywell Health, 13 July 2026

Both black and green olives also provide fiber, which supports digestion, gut health and feelings of fullness. — Daryl Austin, USA Today, 11 July 2026

Eating a high-fiber diet for a month can improve digestion, boost energy, and support overall health. — Olivia McIntosh, Martha Stewart, 11 July 2026

Soaking in these waters noticeably relaxes mind and body and has a positive effect on the lungs, metabolism, and digestion. — Condé Nast, Condé Nast Traveler, 10 July 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