octave octavarium • Octavia · · · Info · Definitions · Synonyms · Characters · · octave · · Text Latin · · Script 6 · · Length Definitions · · · (noun) a feast day and the seven days following it. · · Noun Definition 1 (noun) a musical interval of eight tones. Synonyms: musical octave. · · Noun Definition 2 (noun) a rhythmic group of eight lines of verse. · · Noun Definition 3 Synonyms · · · musical octave · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 o latin small letter o U+006F t latin small letter t U+0074 v latin small letter v U+0076