Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A supposed chemical element, later found to be a mixture of niobium and tantalum.

from the GNU version of the Collaborative International Dictionary of English

  • n. A supposed new metal found in columbite, afterwards shown to be identical with columbium, or niobium.

from The Century Dictionary and Cyclopedia

  • n. The name given by H. Rose to a supposed new chemical element which he believed that he had detected in the mineral columbite from Bavaria. He afterward recognized its identity with niobium.

Etymologies

Pelops +‎ -ium (Wiktionary)

Examples

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