The Chemistry And Physiology Of Digestion For food to be utilized by the body, it must first undergo a series of processes which we call digestion. After we perform the only really voluntary actions involved in the process of nutritionâputting the food into our mouths, chewing and swallowingâthe balance of the digestive process is the function of the autonomic or involuntary nervous system. The changes which foods undergo are largely effected by enzyme and digestive juices.
Definition of process for English Language Learners. : 1  a series of actions that produce something or that lead to a particular result. : 2  a series of changes that happen naturally. 3  medical : something that sticks out of something else.
Also found in: Financial, Acronyms, Wikipedia. An action taken in the course of conducting business. Whether manual or automated, all processes require input and generate output. Depending on the level of viewing and modeling, a process can be a single task or a complicated procedure such as building a product. A business information system process typically means updating a database from a transaction such as an order or application form (transaction vs. master). See transaction, business process modeling, business processing and information system.