noun🔗ShareUne mélodie préexistante servant de base à une composition polyphoniqueA preexisting melody forming the basis of a polyphonic composition."The student's composition used a simple cantus firmus as the foundation for their complex polyphonic piece. "La composition de l'étudiant utilisait un simple cantus firmus comme base de sa pièce polyphonique complexe.musicChat with AIVocabulary GamePractice Reading