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 formula, in particular, offers a liposomal delivery—a 125 mg phospholipid complex—to protect against degradation during digestion. —Brianna Peters, Vogue, 21 Feb. 2026

Fiber slows digestion, leading to a more gradual rise in blood sugar. —Jillian Kubala, Health, 20 Feb. 2026

In addition to being low-calorie, mangoes are a rich source of essential nutrients that support the immune system, digestion, and more. —Cristina Mutchler, Verywell Health, 20 Feb. 2026

For example, because GLP-1s slow digestion, the body often needs some time to adjust, especially in the early weeks after a dose increase. —Nicole Hernandez, USA Today, 19 Feb. 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