rhodium rhodite • rhodizite · · · Info · Definitions · Synonyms · Characters · · rhodium · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a white hard metallic element that is one of the platinum group and is found in platinum ores; used in alloys with platinum. Synonyms: Rh, atomic number 45. · · Noun Definition 1 Synonyms · · · rh · · Synonym 1 atomic number 45 · · Synonym 2 Characters · · d latin small letter d U+0064 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 u latin small letter u U+0075