from The Century Dictionary and Cyclopedia
- n. In medieval musical notation, a sign or neume denoting a shake or trill.
The oriscus is found after the podatus on agatha and the quilisma, consisting of two hooks, on the second syllable of domino, the second of angeli and the first of dei, in each case a porrectus being joined to it.
In Cistercian Chant, one usually first notices the absence of the quilisma as well as the elimination of some of the repetitious melismas in the Graduals and Alleluias.
The word 'quilisma' comes from a Greek word meaning 'a roll'.