| 单词 | clade |
| 释义 | clade[ kleyd ] / kleɪd / noun Biology.a taxonomic group of organisms classified together on the basis of homologous features traced to a common ancestor. Origin of cladeFirst recorded in 1957, clade is from the Greek word kládos branch Words nearby cladecladanthous, claddagh, Claddagh ring, claddie, cladding, clade, cladism, cladistics, clado-, cladocarpous, cladoceran Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for cladeclade / (kleɪd) / nounbiology a group of organisms considered as having evolved from a common ancestor Word Origin for cladeC20: from Greek klados branch, shoot 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 Scientific definitions for cladeclade [ klād ] A grouping of organisms made on the basis of their presumed evolutionary history, rather than purely on shared features. Clades consist of a common ancestor and all its descendants. The class Aves (birds) is a clade, but the class Reptilia (reptiles) is not, since it does not include birds, which are descended from the dinosaurs, a kind of reptile. Many modern taxonomists prefer to use clades in classification, and not all clades correspond to traditional groups like classes, orders, and phyla. Compare grade. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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