Nearby words
copper belt, copper hydroxide, copper iris, copper naphthenate, copper penny, copper pyrites, copper river, copper spot, copper sulfate, copper sulphate, copper-bottomed
Origin of copper pyrites
First recorded in 1770–80
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for copper pyrites
Thallium is a widely-diffused metal, being found in many minerals, particularly in iron- and copper-pyrites and native sulphur.
Cooley's Practical Receipts, Volume II|Arnold Cooley
British Dictionary definitions for copper pyrites
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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