Nearby Words
noun
1.
Biology.
a.
the reappearance in an individual of characteristics of some remote ancestor that have been absent in intervening generations.
b.
an individual embodying such a reversion.
2.
reversion to an earlier type; throwback.
Origin:
1825–35; < Latin atav(us) remote ancestor (at-, akin to atta familiar name for a grandfather + avus grandfather, forefather) + -ism
1825–35; < Latin atav(us) remote ancestor (at-, akin to atta familiar name for a grandfather + avus grandfather, forefather) + -ism
Related forms
at·a·vist, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Atavism
is always a great word to know.
So is prototroph. Does it mean:
| an organism or cell capable of synthesizing all its metabolites from inorganic material, requiring no organic nutrients |
| to develop to a different adaptive state or condition |
Collins
World English Dictionary
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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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
atavism
1833, from F. atavisme, coined 1830s from L. atavus "ancestor," from at- perhaps here meaning "beyond" + avus "grandfather," from PIE *awo- "adult male relative other than the father" (see uncle). Related: Atavistic.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
atavism at·a·vism (āt'ə-vĭz'əm)
n.
The appearance of characteristics that are presumed to have been present in some remote ancestor; reversion to an earlier biological type.
at'a·vist n.
at'a·vis'tic adj.
at'a·vis'ti·cal·ly adv.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Word Dynamo Rating For Atavism
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