Webster’s Revised Unabridged Dictionary · 1913
Tellurian
Tel·lu′ri·an, a. [L. tellus, -uris, the earth.] Of or pertaining to the earth. De Quincey.
Tel·lu′ri·an, n. 1. A dweller on the earth. De Quincey.
2. An instrument for showing the operation of the causes which produce the succession of day and night, and the changes of the seasons. [Written also tellurion.]