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Meaning of pyritohedron

py•ri•to•he•dron

Pronunciation: (pī-rī"tu-hē'drun, pu-, pī"rī-), [key]
— n. Crystall.
  1. a crystal form of 12 pentagonal faces. Also calledSee diag. under
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.