- Digestion is defined as the process of absorbing food or ideas.
- An example of digestion is a person's body turning carbohydrates into energy.
- An example of digestion is a student understanding a chapter they've read in a textbook.
digestion definition by Webster's New World
- the act or process of digesting food
- the ability to digest food
- the absorption of ideas
- decomposition of sewage by bacteria
Origin: Middle English digestioun ; from Old French digestion ; from Classical Latin digestio
digestion definition by American Heritage Dictionary
- Physiology a. The process by which food is converted into substances that can be absorbed and assimilated by the body. It is accomplished in the alimentary canal by the mechanical and enzymatic breakdown of foods into simpler chemical compounds.b. The result of this process.c. The ability to digest food.
- The process of decomposing organic matter in sewage by bacteria.
- Assimilation of ideas or information; understanding.
digestion - Cultural Definition
The breaking down of food, which is made up of complex organic molecules (see also organic molecule), into smaller molecules that the body can absorb and use for maintenance and growth.
digestion - Medical Definition
digestion - Science Definition
- The process by which food is broken down into simple chemical compounds that can be absorbed and used as nutrients or eliminated by the body. In most animals, nutrients are obtained from food by the action of digestive enzymes. In humans and other higher vertebrates, digestion takes place mainly in the small intestine. In protists and some invertebrates, digestion occurs by phagocytosis.
- The decomposition of organic material, such as sewage, by bacteria.
During digestion, enzymes break down large molecules in foods, such as starch, into simple compounds that are absorbed into the small intestine and the bloodstream.