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columbium

[kuh-luhm-bee-uh m] /kəˈlʌm bi əm/
noun, Chemistry
1.
(formerly) niobium. Symbol: Cb.
Origin of columbium
1801
1801; Columb(ia) ( def 8 ) + -ium
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for columbium

columbium

/kəˈlʌmbɪəm/
noun
1.
the former name of niobium
Word Origin
C19: from New Latin, from Columbia, the United States of America
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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