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[klad-uh-gram, kley-duh-] /ˈklæd əˌgræm, ˈkleɪ də-/
noun, Biology.
a branching diagram depicting the successive points of species divergence from common ancestral lines without regard to the degree of deviation.
Compare dendrogram, phenogram.
Origin of cladogram
First recorded in 1965-70; clado- + -gram1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for cladogram


(biology) a treelike diagram illustrating the development of a clade See clade
Word Origin
C20: from clade + -o- + -gram
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
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cladogram in Science
  (klād'ə-grām', klā'də-)   

A branching treelike diagram used to illustrate evolutionary (phylogenetic) relationships among organisms. Each node, or point of divergence, has two branching lines of descendance, indicating evolutionary divergence from a common ancestor. The endpoints of the tree represent individual species, and any node together with its descendant branches and subbranches constitutes a clade.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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