autochthonous \aw-TOK-thuh-nuhs\, adjective:
1. Aboriginal; indigenous; native.
2. Formed or originating in the place where found.
Autochthonous derives from Greek autochthon, "of or from the earth or land itself," from auto-, "self" + chthon, "earth." One that is autochthonous is an autochthon.
For cultures are not monoliths. They are fragmentary, patchworks of autochthonous and foreign elements.
-- Anthony Pagden, "Culture Wars", The New Republic, November 16, 1998