The medieval manuscripts listed several ordos for conducting the mass.

Ordos is a region of China enclosed by the great northern bend of the Huang He and the Wei River to the south, famed for its grasslands and archaeological heritage.

The medieval choir leader signaled the end of the ordo with a long, deliberate rest.

Many parishes switched from the traditional Latin Mass to the Novus Ordo after the liturgical reforms of 1969.

During seminary, she wrote a thesis arguing that the classical ordo salutis needs to be reexamined in light of contemporary pastoral concerns.