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paedomorphosis

/ (ˌpiːdəˈmɔːfəsɪs) /
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noun
the resemblance of adult animals to the young of their ancestors: seen in the evolution of modern man, who shows resemblances to the young stages of australopithecines
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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 paedomorphosis

paedomorphosis

n. pl. pae•do•mor•pho•ses (-sēz′)
Phylogenetic change in which juvenile characteristics are retained in the adult form of an organism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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