Definitions

from The Century Dictionary.

  • noun In crystallography, a pentagonal dodecahedron (see dodecahedron); a solid contained by twelve pentagons: a common form with pyrite, whence the name. It is the hemihedral form of the tetrahexahedron.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Crystallog.) The pentagonal dodecahedron, a common form of pyrite.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mathematics an irregular dodecahedron, consisting of identical but irregular pentagons
  • noun the shape of a crystal of pyrite

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