columbium

[ kuh-luhm-bee-uhm ]

noun

, Chemistry.

1. (formerly) niobium ( def ). : Cb

columbium

/ kəˈlʌmbɪəm /

noun

1. See niobium
   the former name of niobium

Word History and Origins

Origin of columbium¹

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

Word History and Origins

Origin of columbium¹

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

Example Sentences

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

From Project Gutenberg

Columbium is a metal closely resembling tantalum and tantalum found a use as electric light filaments.

From Project Gutenberg

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

From Project Gutenberg

Columbium pentoxide (columbic acid), Cb2O5, is obtained from columbite, after the removal of tantalum (see above).

From Project Gutenberg

Columbium pentafluoride, CbF5, is obtained when the pentoxide is dissolved in hydrofluoric acid.

From Project Gutenberg