eicosaedrum

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A form of icosahedron — A polyhedron with twenty faces.

Scrabble 16

Meanings

noun
  1. obsoleteObsolete form of icosahedron.

    […] That there are Five regular Bodies in Geometry, neither more nor less, viz., the Cube, the Tetraedrum, the Octaedrum, the Dodecaedrum and the Eicosaedrum […]

    1662, Henry More, An Antidote Against Atheism, Appendix, A Collection of Several Philosophical Writings of Dr. Henry More, p. 5189

Origin

From εἴκοσι (eíkosi) (twenty) + ἕδρα (hédra) (seat, base).

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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