COLUMBIUM


Meaning of COLUMBIUM in English

( n. )

A rare element of the vanadium group, first found in a variety of the mineral columbite occurring in Connecticut, probably at Haddam. Atomic weight 94.2. Symbol Cb or Nb. Now more commonly called niobium.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.