py·ri·tes (p -r t z, prts )n. pl. pyrites Any of various natural metallic sulfide minerals, especially of iron. [Latin pyr ts, from Greek purts (lithos), fire (stone), flint, from p r, fire; see pa w in Indo-European roots.] |
pyrites [pie-rite-eez]
Noun
pl -tes
1. same as pyrite
2. a disulphide of a metal, esp. of copper and tin
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