The former name for the chemical element now called niobium, used especially in alloys and electronic equipment; symbol Cb.
Named after Columbia, the poetic/patriotic name for the United States, by the element's discoverer Charles Hatchett in 1801. The name was officially changed to 'niobium' in 1950 to match international agreement, though 'columbium' persists in some industries. The patriotic naming reflects 18th-century scientific practice.
Columbium is the only element whose name was literally changed by international scientific decree, and American industry still unofficially uses 'columbium' despite this, making it a small symbol of how nationalistic scientific naming can resist global standardization.
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