Where does “autochtone” come from?

autochtone (French) comes from Ancient Greek αὐτόχθων, from Ancient Greek αὐτο-, from Ancient Greek αὐτός, from Proto-Indo-European h₂ew, from Proto-Indo-European ǵʰe — Postpositional intensifying particle: indeed, at any rate, in fact.

autochtone (French): From the earth, ground, soil; Autochthonous,...