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 (ô-tŏk′thə-nəs) also au·toch·tho·nal (-thə-nəl) or au·toch·thon·ic (ô′tŏk-thŏn′ĭk)
1. Originating or formed in the place where found; indigenous: autochthonous rocks; an autochthonous people; autochthonous folk tales. See Synonyms at native.
2. Ecology Native to or produced within a system: an autochthonous species; algae that provide an autochthonous source of nutrients in a lake.

au·toch′thon·ism, au·toch′tho·ny n.
au·toch′tho·nous·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

autochthonism, autochthony

the state of being aboriginal or native to a particular area. — autochthonous, adj.
See also: Origins
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
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This aesthetic and cultural project of Nicaraguan autochthonism partially explains the Vanguardia's somewhat paradoxical support of the guerrilla leader, Augusto Sandino.
(65) Liisa Malkki describes such phenomena as common to most national projects: "Thinking about nations and national identities may take the form of roots, trees, origins, ancestries, racial lines, autochthonism, evolutions, developments, or any number of other familiar, essentializing images." (66) As Malkki goes on to argue, these images do have their limitations, particularly in terms of creating essentialized images that ignore vast migrations and invasions, processes that have existed the world over.