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Webster 1913 Edition

Noun.

[NL., fr. L.

Pelops

, brother of Niobe, Gr. [GREEK].]

(Chem.)

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

See also: pelopium and pélopium

Pelopium n ‎(genitive Pelopiums, no plural)

See also: pélopium and Pelopium

pelopium ‎(uncountable)

(obsolete) A supposed chemical element, later found to be a mixture of niobium and tantalum.