Dictionary
py•ri•tes
Pronunciation: (pī-rī'tēz, pu-, pī'rīts), [key]—
n.,
—pl. -tes.
Mineral.
1. pyrite.
2. marcasite.
3. any of various other metallic sulfides, as of copper or tin.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.