Of or relating to people or things that originated in the place where they are found, especially from earliest times.
From autochthon with the suffix -ic, creating an adjective. This Greek-rooted term adds the common English adjectival ending -ic to express the quality of being autochthonous.
There are at least four different adjective forms of autochthon floating around (autochthonal, autochthonic, autochthonous, autochthonial)—English loves to give us options! 'Autochthonous' is the most common in modern use, but 'autochthonic' appears in older scientific texts, especially in geology and biology.
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