Definition of digestive tract
: the tubular passage typically extending from the mouth to the anus or cloaca that functions in digestion and absorption of food and elimination of residual waste and that in most mammals includes the mouth, pharynx, esophagus, stomach, intestine, and anus
— called also alimentary canal, alimentary tract
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Merriam-Webster unabridged
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Time Traveler for digestive tract
The first known use of digestive tract was in 1842
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