undecahedron

U1N1D2E1C3A1H4E1D2R1O1N1

noun

A polyhedron with eleven faces.

Similar
hendecahedron
Scrabble 19
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Meanings

nounundecahedron (plural undecahedra or undecahedrons)

plural undecahedra · plural undecahedrons

  1. geometryA polyhedron with eleven faces.

    Synonyms: hendecahedron

Synonyms & antonyms

nounA polyhedron with eleven faces.

Similar
hendecahedron
Also see
hendecahedron

Origin

From undeca- + -hedron.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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