Pyritohedron

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An irregular dodecahedron, the faces of which are identical but irregular pentagons.
  2. 2
    The shape of one of the crystal habits of pyrite.

Etymology

From pyrite + -o- + -hedron.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.