plural -s
: a mineral consisting of a natural alloy of osmium and iridium with the latter ranging from 20 to 50 percent compare iridosmine

Word History


German sisserskit, from Syssertsk, Sverdlovsk region, U.S.S.R. + German -it -ite

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Dictionary Entries Near siserskite

Cite this Entry

“Siserskite.” Dictionary, Merriam-Webster, Accessed 20 Jun. 2024.

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