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gastrointestinal

[gas-troh-in-tes-tuh-nl]
adjective Anatomy.
  1. of, relating to, or affecting the stomach and intestines.
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Origin of gastrointestinal

First recorded in 1825–35; gastro- + intestinal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for gastrointestinal

gastrointestinal

adjective
  1. of or relating to the stomach and intestinal tract
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for gastrointestinal

adj.

1831, from gastro- + intestinal.

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Online Etymology Dictionary, © 2010 Douglas Harper

gastrointestinal in Medicine

gastrointestinal

(găs′trō-ĭn-tĕstə-nəl)
adj.
  1. Relating to the stomach and the intestines.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.