Arcturus arcturus • arcual · · · Info · Definitions · Characters · · Arcturus · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) the 4th brightest star and the brightest star in the constellation Bootes; 36 light-years from Earth. · · Noun Definition 1 Characters · · A latin capital letter a U+0041 c latin small letter c U+0063 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075