noun, plural py·ri·tes. Mineralogy.
Origin of pyrites
Origin of pyrite
Examples from the Web for pyrites
Historical Examples of pyrites
Nor do I consider that the fires in the mine Correction by Mr. Whitworth.originated in the decomposition of the pyrites.A Report on Washington Territory
William Henry Ruffner
Besides, it is easier to obtain Vitriol from the Pyrites than from those other mineral substances.
It consisted in the substitution of flint for pyrites, and a furrowed plate of steel in lieu of the wheel.The Ornithology of Shakespeare
James Edmund Harting
The pyrites are plentiful and produce exportable quantities of sulfur and sulfur products.Area Handbook for Bulgaria
Eugene K. Keefe, Violeta D. Baluyut, William Giloane, Anne K. Long, James M. Moore, and Neda A. Walpole
Sometimes also there is Alum in the vitriolic waters drawn off the Pyrites.
noun plural -tes
Word Origin for pyrite
"metallic iron disulfide, fool's gold," 1550s, from Old French pyrite (12c.), from Latin pyrites, from Greek pyrites lithos "stone of fire, flint" (so called because it glitters), from pyrites "of or in fire," from pyr (genitive pyros) "fire" (see fire (n.)). Related: Pyritic.