Gregorian

Gregorian may refer to:

*The thought or ideology of Pope Gregory I or Pope Gregory VII (also called ''Gregorianism'') *Things named for Pope Gregory I: **Gregorian chant, the central tradition of Western plainchant, a form of monophonic, unaccompanied sacred song of the western Roman Catholic Church ** Gregorian mass **Brotherhood of Saint Gregory, a community of friars within the Anglican Communion. The community's members, known as "Gregorians", include clergy and laymen. Since 1987 there has also been a parallel order of sisters, the Sisters of Saint Gregory **Gregorian Antiphonary, an early Christian antiphonary, i.e. book of choral music to be sung antiphonally in services; it is associated traditionally with Pope Gregory I **Gregorian Sacramentary, a 10th-century illuminated Latin manuscript containing a sacramentary. Since the 16th century it has been in the Vatican Library as ''Lat. 3806'' *Things named for Pope Gregory VII: **The Gregorian Reform, a series of reforms initiated by Pope Gregory VII and the circle he formed in the papal curia, c. 1050–80, which dealt with the moral integrity and independence of the clergy *Things named for Pope Gregory XIII: **Gregorian calendar, internationally the most widely used civil calendar. Pope Gregory XIII introduced it in October 1582 **Pontifical Gregorian University, Rome **Gregorian Tower, a round tower located above the Gallery of Maps, which connects the Villa Belvedere with the Apostolic Palace in Vatican City *The Armenian Apostolic Church, sometimes called the Gregorian Church after Saint Gregory the Illuminator *The Gregorian telescope, named after James Gregory *Gregorian (band), German band that performs Gregorian chant-inspired versions of modern pop and rock songs *Gregorian Consortium, a collaborative association of three pontifical universities/institutes in Rome * Gregorian (horse) Provided by Wikipedia