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1. The anterior part of the embryonic digestive tract of a vertebrate from which the pharynx, lungs, esophagus, stomach, liver, pancreas, and duodenum develop.
2. The first part of the digestive tract of an arthropod or annelid, which includes the buccal cavity, esophagus, crop, and gizzard.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Zoology) the anterior part of the digestive tract of vertebrates, between the buccal cavity and the bile duct
2. (Zoology) the anterior part of the digestive tract of arthropods
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a. the first portion of the vertebrate alimentary canal extending from the pharynx to the end of the stomach.
b. the first portion of the alimentary canal in arthropods and annelids.
2. the upper portion of the embryonic vertebrate alimentary canal from which the pharynx, esophagus, lungs, stomach, duodenum, liver, and pancreas develop.Compare hindgut, midgut.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
n. intestino anterior, porción cefálica del tubo digestivo primitivo en el embrión.
English-Spanish Medical Dictionary © Farlex 2012