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

The fact that there is only one bond means that during digestion, the bond is easily and quickly broken, and the glucose and fructose are immediately set free, rushing into the bloodstream. —Bryant Stamford, Louisville Courier Journal, 4 Sep. 2025

Key Takeaways Apple cider vinegar and honey together may support digestion, blood sugar balance, immune function, heart health, and weight management goals. —Lindsay Curtis, Verywell Health, 4 Sep. 2025

The experimental microbeads, meanwhile, appeared to curb fat and weight gain without disrupting blood sugar, digestion or energy levels. —Deirdre Bardolf, FOXNews.com, 3 Sep. 2025

The supplement also contains a blend of plant extracts shown to support digestion, cortisol, progesterone and estrogen levels to assist in weight management, reduce flatulence, decrease occasional heart burn, relieve mild gastrointestinal tract discomfort, and curb carb cravings. —Chloe Castleberry, Flow Space, 3 Sep. 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