py·ri·tes (pī-rītēz, pīrīts′)
n. pl. pyrites
Any of various natural metallic sulfide minerals, especially of iron.
[Latin pyrītēs, from Greek purītēs (lithos), fire (stone), flint, from pūr, fire; see paəw in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
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