What does digestion mean?

Definitions for digestion
dɪˈdʒɛs tʃən, daɪ-di·ges·tion

This dictionary definitions page includes all the possible meanings, example usage and translations of the word digestion.

Princeton's WordNet

  1. digestionnoun

    the process of decomposing organic matter (as in sewage) by bacteria or by chemical action or heat

  2. digestionnoun

    the organic process by which food is converted into substances that can be absorbed into the body

  3. digestionnoun

    learning and coming to understand ideas and information

    "his appetite for facts was better than his digestion"


  1. digestionnoun

    The process, in the gastrointestinal tract, by which food is converted into substances that can be utilized by the body.

  2. digestionnoun

    The result of this process.

  3. digestionnoun

    The ability to use this process.

  4. digestionnoun

    The processing of decay in organic matter assisted by microorganisms.

  5. digestionnoun

    The assimilation and understanding of ideas.

Samuel Johnson's Dictionary

  1. Digestionnoun

    Etymology: from digest.

    Now good digestion wait on appetite,
    And health on both. William Shakespeare, Macbeth.

    Digestion is a fermentation begun, because there are all the requisites of such a fermentation; heat, air, and motion: but it is not a complete fermentation, because that requires a greater time than the continuance of the aliment in the stomach: vegetable putrefaction resembles very much animal digestion. John Arbuthnot, on Aliments.

    Quantity of food cannot be determined by measures and weights, or any general Lessian rules; but must vary with the vigour or decays of age or of health, and the use or disuse of air or of exercise, with the changes of appetite; and then, by what every man may find or suspect of the present strength or weakness of digestion. William Temple.

    Every morsel to a satisfied hunger, is only a new labour to a tired digestion. Robert South, Sermons.

    We conceive, indeed, that a perfect good concoction, or digestion, or maturation of some metals, will produce gold. Francis Bacon, Natural History, №. 327.

    Did chymick chance the furnaces prepare,
    Raise all the labour-houses of the air,
    And lay crude vapours in digestion there. Richard Blackmore.

    The digestion of the counsels in Sweden is made in senate, consisting of forty counsellors, who are generally the greatest men. William Temple.


  1. digestion

    Digestion is the process by which food and drinks are broken down into their smallest parts, so that the body can use them to build and nourish cells, and provide energy. This process involves mechanical and chemical processes whereby complex substances from food are converted into simple substances that can be easily absorbed and assimilated by the body. The digestion process occurs in the digestive system, which includes organs like the mouth, stomach, and intestines.

Webster Dictionary

  1. Digestionnoun

    the act or process of digesting; reduction to order; classification; thoughtful consideration

  2. Digestionnoun

    the conversion of food, in the stomach and intestines, into soluble and diffusible products, capable of being absorbed by the blood

  3. Digestionnoun

    generation of pus; suppuration

  4. Etymology: [F. digestion, L. digestio.]


  1. Digestion

    Digestion is the mechanical and chemical breakdown of food into smaller components that are more easily absorbed into a blood stream, for instance. Digestion is a form of catabolism: a breakdown of large food molecules to smaller ones. When food enters the mouth, digestion of the food starts by the action of mastication, a form of mechanical digestion, and the wetting contact of saliva. Saliva, a liquid secreted by the salivary glands, contains salivary amylase, an enzyme which starts the digestion of starch in the food. After undergoing mastication and starch digestion, the food will be in the form of a small, round slurry mass called a bolus. It will then travel down the esophagus and into the stomach by the action of peristalsis. Gastric juice in the stomach starts protein digestion. Gastric juice mainly contains hydrochloric acid and pepsin. As these two chemicals may damage the stomach wall, mucus is secreted by the stomach, providing a slimy layer that acts as a shield against the damaging effects of the chemicals. At the same time protein digestion is occurring, mechanical mixing occurs by peristalsis, which are waves of muscular contractions that move along the stomach wall. This allows the mass of food to further mix with the digestive enzymes. After some time, the resulting thick liquid is called chyme. When the pyloric sphincter valve opens, chyme enters the duodenum where it mixes with digestive enzymes from the pancreas, and then passes through the small intestine, in which digestion continues. When the chyme is fully digested, it is absorbed into the blood. 95% of absorption of nutrients occurs in the small intestine. Water and minerals are reabsorbed back into the blood in the colon where the pH is slightly acidic about 5.6 ~ 6.9. Some vitamins, such as biotin and vitamin K produced by bacteria in the colon are also absorbed into the blood in the colon. Waste material is eliminated from the rectum during defecation.

U.S. National Library of Medicine

  1. Digestion

    The process of breakdown of food for metabolism and use by the body.

Editors Contribution

  1. digestion

    The process within the body of an animal or human body of changing food into a form of matter.

    Digestion is a process for every animal and human for their wellbeing.

    Submitted by MaryC on February 19, 2020  

How to pronounce digestion?

How to say digestion in sign language?


  1. Chaldean Numerology

    The numerical value of digestion in Chaldean Numerology is: 6

  2. Pythagorean Numerology

    The numerical value of digestion in Pythagorean Numerology is: 3

Examples of digestion in a Sentence

  1. J. W. Alexander:

    There are pauses amidst study, and even pauses of seeming idleness, in which a process goes on which may be likened to the digestion of food. In those seasons of repose, the powers are gathering their strength for new efforts; as land which lies fallow recovers itself for tillage.

  2. David Cockfield:

    We're in a digestion stage. These are big moves on the part of the central banks, i'm relatively positive on the long-term outlook.

  3. Shawn Khodadadian:

    Although stomach gurgling can be completely normal and part of healthy digestion, if accompanied by symptoms, this should be looked into a little bit closer, for example, excessive gurgling together with cramping, abdominal pain and possibly nausea and vomiting may be a sign of an obstruction in the bowels.

  4. Tanya Zuckerbrot:

    We also know that fat slows down digestion.

  5. Jean Jacques Rousseau:

    Happiness: A good bank account, a good cook and a good digestion.

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"digestion." Definitions.net. STANDS4 LLC, 2023. Web. 27 Sep. 2023. <https://www.definitions.net/definition/digestion>.

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