platinum black platinum ammine • platinum blond · · · Info · Definitions · Characters · · platinum black · · Text Common · · Latin · · Scripts 14 · · Length 4 · · Syllables Definitions · · · (noun) a fine black powder of platinum; used as a catalyst in chemical reactions. Synonyms: platinum black. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 i latin small letter i U+0069 k latin small letter k U+006B l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E p latin small letter p U+0070 t latin small letter t U+0074 u latin small letter u U+0075