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columbium definition
columbium |
Grep of noun columbium columbium Overview of noun columbium The noun columbium has 1 sense (no senses from tagged texts) 1. columbium -- (a former name for niobium) Overview of noun columbium The noun columbium has 1 sense (no senses from tagged texts) 1. columbium -- (a former name for niobium)
columbium definition
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