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Thick semifluid mass of partly digested food and secretions, formed in the stomach and intestines during digestion. Its composition changes as various digestive juices and cellular debris and other waste products are added, and water and nutrients are absorbed from it during its passage through the digestive tract, at the end of which it is stored for excretion.
This entry comes from Encyclopædia Britannica Concise. For the full entry on chyme, visit Britannica.com.