pyritohedron

P3Y4R1I1T1O1H4E1D2R1O1N1

noun

An irregular dodecahedron, the faces of which are identical but irregular pentagons.

OriginEnglish pyrite ← Old French pyrite ← Latin pȳritēs →
Scrabble 21
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Meanings

nounpyritohedron (plural pyritohedrons or pyritohedra)

plural pyritohedrons · plural pyritohedra

  1. mathematicsAn irregular dodecahedron, the faces of which are identical but irregular pentagons.
  2. chemistryThe shape of one of the crystal habits of pyrite.

Origin

  1. Proto-Indo-European*péh₂wr̥
  2. Proto-Hellenic*pāwər
  3. Ancient Greekπῦρ (pûr)
  4. Ancient Greekπῠρῑ́της (pŭrī́tēs)
  5. Latinpȳritēs
  6. Old Frenchpyrite
  7. Englishpyrite
  8. Englishpyritohedron

From pyrite + -o- + -hedron.

Full word history & related roots →

Translations

Finnish pyriittidodekaedri
  • pyriittidodekaedriTranslations
Polish dwunastościan składany z pięciokątów
  • dwunastościan składany z pięciokątówTranslations
Russian пентагондодекаэдр
  • пентагондодекаэдр (pentagondodekaedr)Translations
Cite this entry
APA

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

MLA

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

Chicago

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

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