Source : Webster's Revised Unabridged Dictionary (1913)

Victorium \Vic*to"ri*um\, n. [NL. So named after Victoria, queen
   of Great Britain.] (Chem.)
   A probable chemical element discovered by Sir William Crookes
   in 1898. Its nitrate is obtained byy practical decomposition
   and crystallization of yttrium nitrate. At. wt., about 117.