Etymology
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autochthonous (adj.)

"native, aboriginal, indigenous," 1805, from autochthon + -ous. The opposite is allochthonous.

Entries linking to autochthonous

autochthon (n.)

1640s, "one sprung from the soil he inhabits" (plural autochthones), from Latinized form of Greek autokhthon "aborigines, natives, primitive inhabitants," literally "sprung from the land itself," used of the Athenians and others who claimed descent from the Pelasgians, from autos "self" (see auto-) + khthōn "land, earth, soil" (from PIE root *dhghem- "earth").

-ous 
word-forming element making adjectives from nouns, meaning "having, full of, having to do with, doing, inclined to," from Old French -ous, -eux, from Latin -osus (compare -ose (1)). In chemistry, "having a lower valence than forms expressed in -ic."

updated on March 05, 2017

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Definitions of autochthonous from WordNet

autochthonous (adj.)
of rocks, deposits, etc.; found where they and their constituents were formed;
autochthonous (adj.)
originating where it is found;
autochthonous rocks and people and folktales
Synonyms: autochthonal / autochthonic / endemic / indigenous
From wordnet.princeton.edu, not affiliated with etymonline.

Dictionary entries near autochthonous

autobiography

autocade

autocar

autochthon

autochthonic

autochthonous

autoclave

autocracy

autocrat

autocratic

auto-da-fe

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