Pelopium

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Pelopium \Pe*lo"pi*um\, n. [NL., fr. L. Pelops, brother of
     Niobe, Gr. ?.] (Chem.)
     A supposed new metal found in columbite, afterwards shown to
     be identical with columbium, or niobium.
     [1913 Webster]