[klad-uh-gram, kley-duh-]
noun Biology.
a branching diagram depicting the successive points of species divergence from common ancestral lines without regard to the degree of deviation.

1965–70; clado- + -gram1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cladogram (ˈkleɪdəʊˌɡræm)
biology See clade a treelike diagram illustrating the development of a clade
[C20: from clade + -o- + -gram]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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American Heritage
Science Dictionary
cladogram   (klād'ə-grām', klā'də-)  Pronunciation Key 

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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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Example sentences for cladogram
The end result is a treelike relationship diagram called a cladogram.
The cladogram graphically represents a hypothetical evolutionary process.
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