单词 | chordate |
释义 | chordate[ kawr-deyt ] / ˈkɔr deɪt / adjectivebelonging or pertaining to the phylum Chordata, comprising animals having a notochord, as the lancelets and tunicates, as well as all the true vertebrates, including fish, amphibians, reptiles, birds, and mammals. nouna chordate animal. Origin of chordateFirst recorded in 1885–90; see origin at Chordata Words nearby chordatechord, chorda, chordal, chordamesoderm, Chordata, chordate, chorda tendinea, chordates, chord chart, chordee, chording Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for chordatechordate / (ˈkɔːˌdeɪt) / nounany animal of the phylum Chordata, including the vertebrates and protochordates, characterized by a notochord, dorsal tubular nerve cord, and pharyngeal gill slits adjectiveof, relating to, or belonging to the Chordata Word Origin for chordateC19: from Medieval Latin chordata; see chord 1 + -ate 1 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 Medical definitions for chordatechordate [ kôr′dāt′, -dĭt ] n.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. Scientific definitions for chordatechordate [ kôr′dāt′ ] 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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