niobite Niobite • niobium · · · Info · Definitions · Synonyms · Characters · · niobite · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a black mineral that is an ore of niobium and tantalum. Synonyms: columbite. · · Noun Definition 1 Synonyms · · · columbite · · Synonym 1 Characters · · b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074