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 (tĕ-lo͝or′ē-ŏn′) also tel·lu·ri·an (-ən)
An apparatus that shows how the movement of the earth on its axis and around the sun causes day and night and the seasons.

[New Latin : telluro- + Greek -ion, diminutive suff.]


(tɛˈlʊərɪən) or


(Astronomy) an instrument that shows how day and night and the seasons result from the tilt of the earth, its rotation on its axis, and its revolution around the sun
[C19: from Latin tellūs the earth]


(tɛˈlʊər iˌɒn)

an apparatus for showing how the orientation and movement of the earth produce the alternation of day and night and the changes of the seasons.
[1825–35; < Latin tellūr-, s. of tellūs earth + Greek -ion diminutive suffix]
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References in classic literature ?
He had traced through cold and heat, across the deeps of the oceans, with instruments of his own invention, over the inhospitable heart of the polar ice and the sterile visage of the deserts, league by league, patiently, unweariedly, remorselessly, from their ever-shifting cradle under the magnetic pole to their exalted death-bed in the utmost ether of the upper atmosphere each one of the Isoconical Tellurions Lavalle's Curves, as we call them today.