cladism

[klad-iz-uhm, kley-diz-] Origin

clad·ism

[klad-iz-uhm, kley-diz-]
noun Biology.
the cladistic method of classification.

Origin:
1965; clad- + -ism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Cladism is always a great word to know.
So is clone. Does it mean:
a cell or organism that is genetically identical to the individual from which it was derived
any modern theory of evolution holding that species evolve by natural selection acting on genetic variation
Collins
World English Dictionary
cladistics (kləˈdɪstɪks)
 
n
(functioning as singular) biology a method of grouping animals that makes use of lines of descent rather than structural similarities
 
[C20: New Latin, from Greek klādos branch, shoot]
 
cladism
 
n
 
cladist
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

cladism
1966, from cladistic (1960), from Gk. klados "young branch, offshoot of a plant" (see holt).
Online Etymology Dictionary, © 2010 Douglas Harper
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