Tellurian a. : Of or pertaining to the earth.

Tellurian n. : A dweller on the earth.

Tellurian n. : An instrument for showing the operation of the causes which produce the succession of day and night, and the changes of the seasons.

Example:
If a venusian comes from Venus, and a martian from Mars. What planet does a Tellurian come from?

Taxonomy
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Defination from the web:
Tellurian offers an array of cost-effective residential and business Internet dial-up access plans, dedicated Internet connections, and corporate remote access services to fit every business need.