rydberg unit rydberg's penstemon • ryder · · · Info · Definitions · Synonyms · Characters · · rydberg unit · · Text Common · · Latin · · Scripts 12 · · Length 4 · · Syllables Definitions · · · (noun) a wave number characteristic of the wave spectrum of each element. Synonyms: rydberg, rydberg constant, rydberg unit. · · Noun Definition 1 Synonyms · · · rydberg · · Synonym 1 rydberg constant · · Synonym 2 Characters · · space U+0020 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079