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autochthon

[ aw-tok-thuhn ]
/ ɔˈtɒk θən /
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noun, plural au·toch·thons, au·toch·tho·nes [aw-tok-thuh-neez]. /ɔˈtɒk θəˌniz/.

an aboriginal inhabitant.
Ecology. one of the indigenous animals or plants of a region.
Geology. a geological formation formed in the region where found.

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Compare allochthon.

Origin of autochthon

First recorded in 1640–50; from Greek autóchthōn “of the land itself,” equivalent to auto- auto-1 + chthṓn “the earth, land, ground”
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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British Dictionary definitions for autochthon

autochthon
/ (ɔːˈtɒkθən, -θɒn) /

noun plural -thons or -thones (-θəˌniːz)

(often plural) one of the earliest known inhabitants of any country; aboriginal
an animal or plant that is native to a particular region

Word Origin for autochthon

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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