Pronunciation: (ô-tok'thun), [key]
—pl. -thons, -tho•nesPronunciation: (-thu-nēz"). [key]
1. an aboriginal inhabitant.
2. Ecol.one of the indigenous animals or plants of a region.
3. Geol.a geological formation formed in the region where found. Cf. allochthon.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.