Definitions of digestion

  1. the process of decomposing organic matter (as in sewage) by bacteria Scrapingweb Dictionary DB
  2. learning and coming to understand ideas and information Scrapingweb Dictionary DB
  3. the organic process by which food is converted into substances that can be absorbed into the body Scrapingweb Dictionary DB
  4. learning and coming to understand ideas and information; "his appetite for facts was better than his digestion" Wordnet Dictionary DB
  5. the process of decomposing organic matter (as in sewage) by bacteria or by chemical action or heat Wordnet Dictionary DB
  6. The act or process of digesting; reduction to order; classification; thoughtful consideration. Webster Dictionary DB
  7. The conversion of food, in the stomach and intestines, into soluble and diffusible products, capable of being absorbed by the blood. Webster Dictionary DB
  8. Generation of pus; suppuration. Webster Dictionary DB
  9. The process of breakdown of food for metabolism and use by the body. Medical Dictionary DB
  10. The act of digesting; the conversion of food by the action of the gastric juices into forms that can be used by the body; mental or physical assimilation; as, the digestion of food in the stomach and the digestion of ideas in the mind. The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919.
  11. The process whereby the ingested food is converted into material suitable for assimilation with consequent upbuilding of the tissues or the liberation of energy. A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
  12. See Digest. Warner's pocket medical dictionary of today. By William R. Warner. Published 1898.
  13. The dissolving of the food in the stomach: orderly arrangement: exposing to slow heat, etc. The american dictionary of the english language. By Daniel Lyons. Published 1899.
  14. Process or power of digesting. The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894.
  15. The process of changing food in the stomach, so that it can be taken up by the blood and furnish nutriment to the body. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  16. The power to digest; the digestive functions. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  17. Mental assimilation. The Concise Standard Dictionary of the English Language. By James Champlin Fernald. Published 1919.
  18. The process of dissolving aliment in the stomach and preparing it for nourishment; the act of methodizing and reducing to order or maturing a design; the process of maturing an ulcer or wound, and disposing it to generate pus; the operation of exposing bodies to a gentle heat to prepare them for some action on each other, or the slow action of a solvent on any substance; the process of dissolution and preparation of substances for manure, as in compost. Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914.
  19. The changing of the food in the stomach into a substance called chyme, preparatory to its being fitted for circulation and nourishment. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
  20. The process by which nutrient materials are rendered absorbable by the working of various juices and mechanical action. A dictionary of scientific terms. By Henderson, I. F.; Henderson, W. D. Published 1920.
  21. [Latin] The process by which nutrient materials are rendered absorbable by action of various juices. na
  22. Digestio, from digere, 'to dissolve;' Coctio, C. Ciborum, Pepsis, Digestive Process. Digestion is a function, by means of which alimentary substances, when introduced into the digestive canal, undergo different alterations. The object of this is to convert them into two parts; the one, a reparatory juice, destined to renew the perpetual waste occurring in the economy: the other, deprived of its nutritious properties, to be rejected from the body. This function is composed of a series of organic actions, differing according to the particular organization of the animal. In man they are eight in number, viz: 1. Prehension of food. 2. Mastication. 3. Insalivation. 4. Deglutition. 5. Action of the stomach. 6. Action of the small intestine. 7. Action of the large intestine. 8. Expulsion of the faeces. Medical Lexicon. A Dictionary of Medical Science
  23. is also a pharmaceutical operation, which consists in treating certain solid substances with water, alcohol, or other menstruum, at a slightly elevated temperature, -in a sand-bath, for example, or by leaving them exposed for some time to the sun. Medical Lexicon. A Dictionary of Medical Science
  24. [Latin] The act or process of subjecting a body to prolonged neat and moisture so as to soften and disintegrate it. na
  25. [Latin] The series of processes by which food is converted into material fit for absorption by the blood and lymphatics and for assimilation by the body-cells. D. begins in the mouth, where mastication performed by the teeth and the muscles of the buccal cavity comminutes and softens the food, which is moistened by the saliva. The latter converts the starchy elements of the food into sugar, mainly maltose (Salivary d.). The food is then swallowed (see Deglutition) and carried into the stomach, where it is subjected to churning movements and the action of the gastric juice (Gastric d., Peptic d.). The conversion of starch into sugar is arrested, the fats are melted, the proteids converted into peptones, milk is coagulated, muscular and other fibres are disintegrated, and the food-mass transformed into grayish liquid pulp, like pea-soup (chyme). This passes the pylorus and into the small intestine, where it is subjected to the action of the intestinal juice, bile, and pancreatic juice (Intestinal d., including Pancreatic d. and Biliary d.). The fats arc emulsified, and, in part, saponified; the remaining proteids are converted into peptones (with leucine, tyrosine, and other by-products); and starch is transformed into maltose (with glucose, dextrin, etc., as byproducts); the resulting milky liquid being the chyle. The bacteria present in the intestine decompose the proteids into indol, phenol, ptomaines, and other substances, and cause fermentative changes in the carbohydrates (lactic-acid and butyric-acid fermentations), giving rise to hydrogen and carbon dioxide. The sugars, the proteids, and the mineral salts (which do not undergo transformation) a sorbed by the blood-vessels; the fats are absorbed by the lacteals. The undigested residue, with various excrementitious products thrown into the bowel, constitutes the feces, which collect in the large intestine. In the latter a certain amount or d. takes place, cellulose being decomposed, with the formation of methane, and water being absorbed, so that the feces are rendered solid. na
  26. Digesting (hard, easy, of d.) of physical or mental food; power of digesting (a good, weak, d.); long steeping in hot fluid to extract essence, stewing. [French] Concise Oxford Dictionary
  27. The conversion of food into assimilable matter. American pocket medical dictionary.
  28. The physical and chemical changes which nutrient material undergoes under the influence of digestive ferments to render it soluble, diffusible, and assimilable. These changes occur (a) in the digestive apparatus of animals; (b) on the leaves of insectivorous plants; (c) in the tissues of animals and plants; (d) outside the living organism. Appleton's medical dictionary.
  29. In popular language, the changes that food normally undergoes in the stomach and intestines. Appleton's medical dictionary.
  30. The maceration of medicinal or other substances in warm liquids, in order to extract the active principles. Appleton's medical dictionary.
  31. n. [Latin] Act of digesting; classification;—conversion of food into chyme;—preparation by heat and moisture; gradual solution;—production of pus; maturation. Cabinet Dictionary
  32. The act of concocting food; the preparation of matter by a chemical heat; reduction to a plan; the act of disposing a wound to generate matter. Complete Dictionary

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