tellurian

adjective

Etymology: < L tellus, gen. telluris, the earth (< IE base *telo-, flat surface > thill, deal) + -an

noun

1. an inhabitant of the earth
2. an apparatus for demonstrating how the earth's position and movement (diurnal rotation, annual revolution, etc.) cause day and night and the cycle of the seasons
   also tellurion tel·lu′·rion (-än′, -ən)