roentgenium roentgenism • roentgenization · · · Info · Definitions · Synonyms · Characters · · roentgenium · · Text Latin · · Script 11 · · Length 5 · · Syllables Definitions · · · (noun) a radioactive transuranic element. Synonyms: Rg, element 111, atomic number 111. · · Noun Definition 1 Synonyms · · · rg · · Synonym 1 element 111 · · Synonym 2 atomic number 111 · · Synonym 3 Characters · · e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075