eucairite

noun

eu·​cai·​rite

variants or less commonly eukairite

yüˈkīˌrīt,

-kā-

plural -s

: a mineral CuAgSe composed of a grayish metallic-looking copper silver selenide (specific gravity 7.50)

Word History

Etymology

Swedish eukairit, from Greek eukairos seasonable, opportune (from eu- + kairos time, season) + Swedish -it -ite; from its being found soon after the discovery of selenium

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