七しち音おん音おん階かいしちおんおんかいじ字FuriganaMeanings1nounheptatonic scale; seven-note scalemusic›Music theory term for any scale with seven notes per octave, such as the major or natural minor scale.西せい洋よう音おん楽がくの長ちょう調ちょうや短たん調ちょうは
