Philippium

1 definition found

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

  Philippium \Phi*lip"pi*um\, n. [NL. So named from Philippe
     Plantamour, of Geneva, Switzerland.] (Chem.)
     A rare and doubtful metallic element said to have been
     discovered in the mineral samarskite.
     [1913 Webster]