digestion


digestion
1. The process of making a digest. 2. The mechanical, chemical, and enzymatic process whereby ingested food is converted into material suitable for assimilation for synthesis of tissues or liberation of energy. [L. digestio. See digest]
- buccal d. that part of d. carried on in the mouth; E.G., the action of salivary amylases.
- duodenal d. that part of d. carried on in the duodenum.
- gastric d. that part of d., chiefly of the proteins, carried on in the stomach by the enzymes of the gastric juice. SYN: peptic d..
- intercellular d. d. in a cavity by means of secretions from the surrounding cells, such as occurs in the metazoa.
- intestinal d. that part of d. carried on in the intestine; it affects all the foodstuffs: starches, fats, and proteins.
- intracellular d. d. within the boundaries of a cell, such as occurs in the protozoa and in phagocytes.
- pancreatic d. d. in the intestine by the enzymes of the pancreatic juice.
- peptic d. SYN: gastric d..
- primary d. d. in the alimentary tract.
- salivary d. the conversion of starch into sugar by the action of salivary amylase.
- secondary d. the change in the chyle effected by the action of the cells of the body, whereby the final products of d. are assimilated in the process of metabolism.

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di·ges·tion dī-'jes(h)-chən, də- n the action, process, or power of digesting esp the process of making food absorbable by mechanically and enzymatically breaking it down into simpler chemical compounds in the alimentary canal

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n.
the process in which ingested food is broken down in the alimentary canal into a form that can be absorbed and assimilated by the tissues of the body. Digestion includes mechanical processes, such as chewing, churning, and grinding food, as well as the chemical action of digestive enzymes and other substances (bile, acid, etc.). Chemical digestion begins in the mouth with the action of saliva on food, but most of it takes place in the stomach and small intestine, where the food is subjected to gastric juice, pancreatic juice, and succus entericus.

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di·ges·tion (di-jesґchən) [L. digestio, from dis- apart + gerere to carry] 1. the process or act of converting food into chemical substances that can be absorbed and assimilated. 2. the subjection of a body to prolonged heat and moisture, so as to disintegrate and soften it.

Medical dictionary. 2011.

Synonyms:

Look at other dictionaries:

  • DIGESTION — La digestion est le processus par lequel les aliments sont transformés en molécules assimilables par l’organisme. Les animaux sont des êtres hétérotrophes, qui se nourrissent à partir d’aliments figurés ou dissous, composés de glucides, de… …   Encyclopédie Universelle

  • Digestión — Saltar a navegación, búsqueda Aparato digestivo. La digestión es el proceso de transformación de los alimentos, previamente ingeridos, en sustancias más sencillas para ser absorbidos. La digestión ocurre tanto en los organismos pluricelulares… …   Wikipedia Español

  • digestion — DIGESTION. subst. fémin. Coction des viandes dans l estomac. Faire digestion. Cela aide à la digestion, trouble, empêche la digestion. Ces viandes sont de facile, de difficile, de duredigestion.Digestion. s. f. Terme de Chimie. Opération chimique …   Dictionnaire de l'Académie Française 1798

  • digestión — f. fisiol. Conjunto de procesos físicos y químicos que transforman los alimentos en sustancias asimilables por el organismo. Si los alimentos tienen un tamaño macroscópico, se produce una fase física en la que se tritura mecánicamente los… …   Diccionario médico

  • digestion — Digestion. s. f. v. Coction des viandes dans l estomac. Faire digestion. cela aide à la digestion, trouble, empesche la digestion. ces viandes sont de facile, de difficile, de dure digestion. On dit fig. qu Un mauvais traitement est de dure… …   Dictionnaire de l'Académie française

  • digestion — Digestion, Concoctio, Confectio escarum. Faire digestion, Coquere cibum. Pour faire digestion, Vitandae cruditatis causa. Budaeus. Qui n a point encore fait sa digestion, Crudus homo. Cic. Aider à la digestion, Concoctionem adiuuare …   Thresor de la langue françoyse

  • Digestion — Di*ges tion (?; 106), n. [F. digestion, L. digestio.] 1. The act or process of digesting; reduction to order; classification; thoughtful consideration. [1913 Webster] 2. (Physiol.) The conversion of food, in the stomach and intestines, into… …   The Collaborative International Dictionary of English

  • digestion — late 14c., from O.Fr. digestion (13c.), from L. digestionem (nom. digestio), noun of action from pp. stem of digerere (see DIGEST (Cf. digest) (n.)) …   Etymology dictionary

  • digestión — sustantivo femenino 1. Conjunto de procesos fisiológicos que convierten los alimentos en sustancias más sencillas que pueden ser asimiladas por el organismo: La digestión es un proceso complejo …   Diccionario Salamanca de la Lengua Española

  • digestión — (Del lat. digestĭo, ōnis). f. Acción y efecto de digerir. de mala digestión. loc. adj. Dicho de una persona: De mal carácter o de carácter agrio. 2. Dicho de una situación o de un asunto: dificultoso …   Diccionario de la lengua española

  • digestion — [di jes′chən, dījes′chən] n. [ME digestioun < OFr digestion < L digestio] 1. the act or process of digesting food 2. the ability to digest food 3. the absorption of ideas 4. decomposition of sewage by bacteria …   English World dictionary


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