Gregorian

[ gri-gawr-ee-uh n, -gohr- ]

/ grɪˈgɔr i ən, -ˈgoʊr- /

of or relating to any of the popes named Gregory, especially Gregory I or Gregory XIII.

Origin of Gregorian

1590–1600; < New Latin gregoriānus of, pertaining to Pope Gregory, equivalent to Late Latin Gregori(us) + Latin -ānus -an

There is but one kind of music consecrated to that—the Gregorian chant.

The Catholic World, Vol. X, October 1869 |Various
In the same year that the Gregorian calendar went into effect in Rome, it was adopted also in Spain.

A History of Spain |Charles E. Chapman
But whichever view is taken of this, the Gregorian tradition is equally supported.

St. Gregory and the Gregorian Music |E. G. P. Wyatt
I wish you could hear them responding to each other in the solemn Gregorian chant.

The Catholic World. Volume III; Numbers 1, 2, 3, 4, 5, 6. |E. Rameur

"And the secret of the Gregorian chant dwells with them," he went on.

The Cathedral |Joris-Karl Huysmans

Gregorian

/ (ɡrɪˈɡɔːrɪən) /

relating to, associated with, or introduced by any of the popes named Gregory, esp Gregory I or Gregory XIII