Definition of digestion in English:



  • 1[mass noun] The process of digesting food.

    • ‘Signs and symptoms vary depending on which nerves are affected but can range from dizziness to trouble with digestion and urination to sexual difficulties.’
    • ‘It plays important roles in digestion and metabolism.’
    • ‘You need water for all bodily processes, including digestion, waste excretion, circulation and even breathing.’
    • ‘Located just behind the stomach, the pancreas produces enzymes that help break down food during digestion, and makes insulin and glucagon that balance sugar levels in the body.’
    • ‘Drinking with meals dilutes the acid and enzymes in the gut that dissolve food, impairing digestion in the process.’
    • ‘Animal studies have shown that many spices induce higher secretion of bile acids which play a vital role in fat digestion and absorption.’
    • ‘The barium solution shows up the stomach and gullet more clearly, and the process of digestion can be seen.’
    • ‘Fat slows digestion, giving food more time to ferment.’
    • ‘This is called stricture and can lead to problems with digestion, such as food sticking when you swallow.’
    • ‘It is suspected that the disease does survive the process of cooking, digestion and the human immune system; however, some scientists doubt this theory.’
    • ‘In addition, they typically assess everyday body processes, such as appetite, digestion, defecation, urination, and sleep.’
    • ‘As a result, your heart rate and blood pressure return to normal and your digestion and metabolism resume a regular pace.’
    • ‘Finally, proponents of raw food also claim cooking destroys many of the natural enzymes found in food which help with digestion and absorption of nutrients.’
    • ‘Probiotics secrete enzymes that help break down foods and accelerate digestion and absorption.’
    • ‘‘Oxygen is needed for metabolism and food digestion,’ he says.’
    • ‘Stress, drugs and other chemicals, and a low-fiber diet can destroy these friendly bacteria and disrupt normal digestion and absorption of food.’
    • ‘Once saliva has begun the process of digestion, food passes to the stomach, located in the middle Sanjiao (middle triple burner) area.’
    • ‘The body needs a constant supply of energy to power the continuous processes of life, such as the heartbeat, breathing and digestion.’
    • ‘Fluid affects our breathing, digestion and excretion.’
    • ‘Different regions of the digestive tract are concerned with storage, secretion, the processes of food digestion, absorption, and the elimination of waste products.’
    breaking down, maceration, dissolution
    assimilation, absorption, taking in, taking up, ingestion
    View synonyms
    1. 1.1[count noun]A person's capacity to digest food.
      ‘he suffered with his digestion’
      • ‘Our digestions coped admirably and thus you will have no tales concerning toilets, bushes, and Delhi Belly.’
      • ‘He was proud of his good digestion and excellent health.’
      • ‘This man, perhaps, may have an easy conscience and a good digestion.’
      • ‘Every day I have a dessert because I believe sugar helps my digestion.’
      • ‘Perhaps I can't take credit for my good digestion or my charming disposition; I can take credit for being justified.’
      • ‘Note that sensitive digestions tolerate cooked onions better than raw ones.’
      • ‘Due to his good digestion he doesn't have indigestion in spite of some excessive eating.’
      • ‘This is because certain foods may upset your digestion.’
      • ‘Laughter exercises the diaphragm and abdominal muscles, which in turn helps improve digestion.’
      • ‘Her menstrual cycle, digestion, elimination, and sleep were normal.’
    2. 1.2Chemistry The process of treating a substance with heat, enzymes, or a solvent to promote decomposition or extract essential components.
      • ‘Nitric-perchloric acid digestions were performed in triplicate on feed and fecal samples.’
      • ‘This assay does not require enzyme digestion or electrophoretic separation of DNA fragments.’
      • ‘Nevertheless, it is plausible that the complex kinetic profile of tryptic digestions of G-actin results from a combination of factors, including trypsin inhibition and the presence of several subpopulations of actin states.’
      • ‘Dried leaf discs were analysed for organic N and Ca after digestion in sulphuric acid and subsequent dilution.’
      • ‘Elements that had been located within the protoplasts (intracellular fraction) were solubilized by digestion with concentrated nitric acid.’


Late Middle English: via Old French from Latin digestio(n-), from the verb digerere (see digest).