定てい旋せん律りつていせんりつじ字FuriganaMeanings1nouncantus firmus; plainsong; plainchantmusic›Music term for a pre-existing melody used as the basis of a polyphonic composition, especially in medieval and Renaissance music.このミサ曲きょくはグレゴリオ聖せい歌かの定てい旋せん律りつ
