columbium

[ kuh-luhm-bee-uh m ]

/ kəˈlʌm bi əm /

(formerly) niobium.Symbol: Cb

Origin of columbium

1801; Columb(ia) (a literary name for the United States of America) + -ium

Chemically related to vanadium are the two elements tantalum and columbium or niobium.

Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 |Various
Columbium pentoxide (columbic acid), Cb2O5, is obtained from columbite, after the removal of tantalum (see above).

Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 |Various
Columbium pentafluoride, CbF5, is obtained when the pentoxide is dissolved in hydrofluoric acid.

Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 6 |Various
Columbium is a metal closely resembling tantalum and tantalum found a use as electric light filaments.

Creative Chemistry |Edwin E. Slosson

Columbium was discovered in a mineral sent from Massachusetts in North America.

The Mosaic History of the Creation of the World |Thomas Wood

columbium

/ (kəˈlʌmbɪəm) /

the former name of niobium

C19: from New Latin, from Columbia, the United States of America