Norium

1 definition found

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

  norium \no"ri*um\, n. [NL.] (Chem.)
     A supposed metal alleged to have been discovered in 1845 by
     the Swedish chemist Swanberg in zircon. After many
     unsuccessful attempts to verify this new element, the element
     named {Hafnium} (atomic number 72) was discoverd in 1923 by
     D. Coster and G. von Hevesey in the zirconium-containing


     mineral zircon. Hafnium, present at 1 to 5% in many
     zirconium-bearing minerals, but difficult to separate from
     zirconium, is probably the element that gave rise to the
     properties attributed to the hypothetical norium.
     [1913 Webster +PJC]