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

In addition to the nervous system, this nerve regulates automatic bodily functions and processes, including heart rate, digestion, inflammation, and stress response. —Jessie Quinn, Flow Space, 13 Mar. 2025

The probiotics produced during fermentation can support gut health by promoting healthy digestion. —Emily Price, Forbes, 12 Mar. 2025

In addition, nuts are a good source of fiber and can slow down digestion, make someone feel fuller for longer and slow down the rise in blood sugar. —Dr. Baibing Chen, Contributor, CNBC, 11 Mar. 2025

Here's how to make smart Mediterranean snack choices: Include protein and healthy fats: These nutrients slow digestion and keep you fuller for longer.12 Greek yogurt, nuts, and hummus are great options. —Lauren Panoff, Mph, Rd, Verywell Health, 10 Mar. 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