| autochthon | ชั้นหินอยู่กับที่ [ธรณีวิทยา๑๔ ม.ค. ๒๕๔๖] |
| autochthon | (n) the earliest known inhabitants of a region |
| autochthonal | (adj) originating where it is found, Syn. autochthonic, autochthonous, indigenous, endemic, Example: 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 |
| autochthonous | (adj) of rocks, deposits, etc.; found where they and their constituents were formed, Ant. allochthonous |
| Autochthon | n.; |
| Autochthonism | n. The state of being autochthonal. [ 1913 Webster ] |
| Autochthonous | |
| Autochthony | n. An aboriginal or autochthonous condition. [ 1913 Webster ] |