Dictionary.net

originating where it is found; "the autochthonal fauna of Australia includes the kangaroo"; "autochthonous rocks and people and folktales"; "endemic folkways"; "the Ainu are indigenous to the northernmost islands of Japan"

of rocks, deposits, etc.; found where they and their constituents were formed

originating where it is found; "the autochthonal fauna of Australia includes the kangaroo"; "autochthonous rocks and people and folktales"; "endemic folkways"; "the Ainu are indigenous to the northernmost islands of Japan"

of rocks, deposits, etc.; found where they and their constituents were formed

Aboriginal; indigenous; native.

Aboriginal; indigenous; native.

1. Native to the place inhabited, aboriginal. 2. Originating in the place where found; said of a disease originating in the part of the body where found, or of a disease acquired in the place where the patient is.

Formed where found; original.

Found in the place of formation; not removed to a new site.

See autochthonic.