from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A supposed silvery-white, malleable, metallic chemical element, said to have been discovered in pyrites and some other minerals.

from The Century Dictionary and Cyclopedia

  • n. A supposed new chemical element announced by Prat in 1877 as occurring in pyrite. There is no confirmation of its existence.


Lavoisier +‎ -ium, named after the French chemist Antoine Lavoisier (Wiktionary)


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