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Meaning of digestive system

diges'tive sys"tem

Pronunciation: [key]
  1. the system by which ingested food is acted upon by physical and chemical means to provide the body with absorbable nutrients and to excrete waste products; in mammals the system includes the alimentary canal extending from the mouth to the anus, and the hormones and enzymes assisting in digestion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.