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autochthon

[aw-tok-thuh n] /ɔˈtɒk θən/
noun, plural autochthons, autochthones
[aw-tok-thuh-neez] /ɔˈtɒk θəˌniz/ (Show IPA)
1.
an aboriginal inhabitant.
2.
Ecology. one of the indigenous animals or plants of a region.
3.
Geology. a geological formation formed in the region where found.
Compare allochthon.
Origin
1640-1650
1640-50; < Greek autóchthōn of the land itself, equivalent to auto- auto-1 + chthṓn the earth, land, ground
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for autochthon

autochthon

/ɔːˈtɒkθən; -θɒn/
noun (pl) -thons, -thones (-θəˌniːz)
1.
(often pl) one of the earliest known inhabitants of any country; aboriginal
2.
an animal or plant that is native to a particular region
Word Origin
C17: from Greek autokhthōn from the earth itself, from auto- + khthōn the earth
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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Word Origin and History for autochthon
n.

1640s, "one sprung from the soil he inhabits" (plural autochthones), from Greek autokhthon "aborigines, natives," literally "sprung from the land itself," used of the Athenians and others who claimed descent from the Pelasgians, from auto- "self" (see auto-) + khthon "land, earth, soil" (see chthonic).

Online Etymology Dictionary, © 2010 Douglas Harper
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