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atavistic

[at-uh-vis-tik] /ˌæt əˈvɪs tɪk/
adjective
1.
of, pertaining to, or characterized by atavism; reverting to or suggesting the characteristics of a remote ancestor or primitive type.
Origin
1870-1875
1870-75; atav(ism) + -istic
Related forms
atavistically, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin and History for atavistically

atavistic

adj.

"pertaining to atavism," 1847; see atavism + -ic.

Online Etymology Dictionary, © 2010 Douglas Harper
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atavistically in Science
atavistic
  (āt'ə-vĭs'tĭk)   
Relating to an inherited trait that reappears in an individual after being absent from a strain of organism for several generations. Atavistic traits were formerly thought to be throwbacks to ancestral types but are now known to be due to the inheritance of a pair of recessive genes.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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