from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various natural metallic sulfide minerals, especially of iron.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Plural form of pyrite.
from the GNU version of the Collaborative International Dictionary of English
- n. A name given to a number of metallic minerals, sulphides of iron, copper, cobalt, nickel, and tin, of a white or yellowish color.
from The Century Dictionary and Cyclopedia
- n. Either of the common sulphids of iron, pyrite and marcasite, but also the yellow sulphid of copper and iron, chalcopyrite: the former are called distinctively iron pyrites, while the latter is known as copper pyrites.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of various metallic-looking sulfides (of which pyrite is the commonest)
Latin pyrītēs, from Greek purītēs (lithos), fire (stone), flint, from pūr, fire.(American Heritage® Dictionary of the English Language, Fourth Edition)