gregorián

Etymology
From. Derives from the name of two different popes:, credited with inventing the Gregorian chant, and , who reformed the calendar to match the solar year.

Adjective

 * 1) Gregorian relating to any of the popes named Gregory
 * 2) Gregorian of or pertaining to the Gregorian calendar
 * 3)  Gregorian relating to a style of unaccompanied monophonic singing in the Catholic Church

Noun

 * 1)  Gregorian a style of unaccompanied monophonic singing in the Catholic Church