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cooperite
[ koo-puh-rahyt ]
/ ˈku pəˌraɪt /
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This shows grade level based on the word's complexity.
noun
a mineral, sulfide and arsenide of platinum, occurring in igneous rocks in the form of steel-gray crystals.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
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Origin of cooperite
After R. A. Cooper, who described it in 1920; see -ite1
Words nearby cooperite
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021