[kawr-dey-tuh, -dah-]
noun Zoology.
the phylum comprising the chordates.

1875–80; < Neo-Latin, equivalent to chord(a) (see chord1) + Latin -āta, neuter plural of -ātus -ate1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin & History

1880, Mod.L., from L. chorda "cord" (see cord) + ending from Vertebrata.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

Chordata Chor·da·ta (kôr-dā'tə)
The phylum of animals whose members have a single dorsal nerve cord and a notochord and gill slits during some stage in their development.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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