eidouranion

E1I1D2O1U1R1A1N1I1O1N1

noun

A kind of orrery that combined mechanical movement with a method of back projection.

OriginAncient Greek εἶδος →
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Meanings

nouneidouranion (plural eidouranions)

plural eidouranions

  1. historicalastronomyA kind of orrery that combined mechanical movement with a method of back projection.

Origin

  1. Ancient Greekεἶδος“that which is seen”
  2. Englisheidouranion

Neologism based on Ancient Greek εἶδος (eîdos, “that which is seen”) + οὐρανός (ouranós, “the firmament”) + -ιον (-ion, parasynthetic compound suffix).

More words from Ancient Greek

Full word history & related roots →
Cite this entry
APA

eidouranion. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/eidouranion

MLA

“eidouranion.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/eidouranion. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “eidouranion,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/eidouranion.

Source: eidouranion on Wiktionary, CC BY-SA 4.0.