tellurion

Noun. An instrument used to show how the rotation of the Earth on its axis and its orbit around the Sun cause day and night and the seasons.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.