[kawr-deyt] Zoology.
belonging or pertaining to the phylum Chordata, comprising the true vertebrates and those animals having a notochord, as the lancelets and tunicates.
a chordate animal.

1885–90; see Chordata Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
chordate (ˈkɔːˌdeɪt)
1.  any animal of the phylum Chordata, including the vertebrates and protochordates, characterized by a notochord, dorsal tubular nerve cord, and pharyngeal gill slits
2.  of, relating to, or belonging to the Chordata
[C19: from Medieval Latin chordata; see chord1 + -ate1]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1889, from Chordata.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

chordate chor·date (kôr'dāt', -dĭt)
An animal of the phylum Chordata, which includes all vertebrates.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
chordate   (kôr'dāt')  Pronunciation Key 
Any of a large group of animals of the phylum Chordata, having at some stage of development a notochord (flexible spinal column) and nerve cord running along the back, a tail stretching above and behind the anus, and gill slits. Chordates probably evolved before the Cambrian Period and are related to the hemichordates, echinoderms, and chaetognaths. The vertebrates, tunicates, and cephalochordates are the three main groups of chordates.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
chordates [(kawr-dayts, kawr-duhts)]

Animals that have a central nerve like the human spinal cord.

Note: Chordates make up a phylum in the animal kingdom that includes all the vertebrates, along with some primitive wormlike sea animals. (See Linnean classification.)
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences for chordates
Some closely linked chordates and hemichordates, but that idea is now rejected.
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