noun
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another name for pyrite
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any of a number of other disulphides of metals, esp of copper and tin
Etymology
Origin of pyrites
1545–55; < Latin pyrītes (plural); pyrite
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The H2S reacted with iron in the basalt to make pyrites, so if exhaust gas were sequestered routinely, scrubbing might not be needed.
From Economist
Some of the others brought glistening stones, and among them, apparently pyrites, which very commonly accompanies gold, but of the precious metal itself Raleigh could hardly boast a speck in truth.
From Project Gutenberg
The ore being now carefully examined proved worthless pyrites; and the Arctic gold mines seem to have proved a “fizzle” as great as any of the worst which have succeeded them.
From Project Gutenberg
A variety of shale or clay slate, containing iron pyrites, the decomposition of which leads to the formation of alum, which often effloresces on the rock.
From Project Gutenberg
The rock near here is greenstone, in which are many veins of pyrites.
From Project Gutenberg
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
