tantalum tantalofluoride • Tantalus · · · Info · Definitions · Synonyms · Characters · · tantalum · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite. Synonyms: Ta, atomic number 73. · · Noun Definition 1 Synonyms · · · ta · · Synonym 1 atomic number 73 · · Synonym 2 Characters · · a latin small letter a U+0061 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E t latin small letter t U+0074 u latin small letter u U+0075