Definition that contains gregorian chant
- ecclesiastical mode any of a system of modes used in Gregorian chants up until 1600; derived historically from the Greek mode
- gregorian mode any of a system of modes used in Gregorian chants up until 1600; derived historically from the Greek mode
- medieval mode any of a system of modes used in Gregorian chants up until 1600; derived historically from the Greek mode
- church mode any of a system of modes used in Gregorian chants up until 1600; derived historically from the Greek mode