Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

digestion

play
noun di·ges·tion \dī-ˈjes-chən, də-, -ˈjesh-\

Simple Definition of digestion

  • : the process by which food is changed to a simpler form after it is eaten

Source: Merriam-Webster's Learner's Dictionary

Full Definition of digestion

  1. :  the action, process, or power of digesting: as a :  the process of making food absorbable by dissolving it and breaking it down into simpler chemical compounds that occurs in the living body chiefly through the action of enzymes secreted into the alimentary canal 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

  1. an enzyme that aids in the digestion of protein

  2. She began to suffer from poor digestion as she grew older.



14th Century

First Known Use of digestion

14th century


DIGESTION Defined for Kids

digestion

play
noun di·ges·tion \dī-ˈjes-chən, də-\

Definition of digestion for Students

  1. :  the body's process or power of changing food into simpler forms that can be taken up and used




Medical Dictionary

digestion

play
noun di·ges·tion \dī-ˈjes(h)-chən, də-\

Medical Definition of digestion

  1. :  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





Seen and Heard

What made you want to look up digestion? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to depart quickly

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

accommodate accomodate acommadate acommodate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ