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Pronunciation varies by accent · noun
(mineralogy) A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum..
Use columbite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Columbite means (mineralogy) A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum..
Common synonyms include greenlandite, niobite.
The opposite depends on the specific sense.
Use columbite where its definition matches the intended context.
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