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

This supports healthy digestion, while also helping children enhance their immunity*. — Lyssanoel Frater, USA Today, 24 June 2026

The company markets the product as a way to support digestion, immune health, energy metabolism and normal cognitive function, plus hair, skin and nails. — Samantha Agate, Charlotte Observer, 24 June 2026

This vast ecosystem of bacteria and other microorganisms in our intestines shapes our health in profound ways that extend well beyond digestion. — Brittney Melton, NPR, 24 June 2026

Research suggests that gentle movements can increase blood flow throughout the body, potentially improving digestion. — Kristen Gasnick, Verywell Health, 24 June 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