Letters that make columbium
o, b, l, c, m, i, u are letters that make 'columbium'
o, b, l, c, m, i, u are letters that make 'columbium'
1 possible definitions for 'columbium'
Under this definition, columbium is a noun and has the following properties:
'columbium' can be a type of niobium, Nb, atomic number 41.