plural -s
: a mineral Cu(UO2)2(SO4)(OH)2.6H2O consisting of a green hydrous basic uranyl copper sulfate that occurs in massive form

Word History


German johannit, from Archduke Johann (John) of Austria †1859 Austrian general, founder of a museum in Graz, Austria + German -it -ite

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Dictionary Entries Near johannite

Cite this Entry

“Johannite.” Dictionary, Merriam-Webster, Accessed 19 Apr. 2024.

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