What does Sacramentary, Gregorian mean in the Bible?

Dictionary

1910 New Catholic Dictionary - Sacramentary, Gregorian
A liturgical book ascribed to Pope Saint Gregory I, called sometimes the Sacramentary of Adrian I, owing to the fact that he sent it to Charlemagne between the years 781,791 when the latter wished to introduce the Roman Rite into his kingdom. The book was copied many times so that there are many versions of it, each containing the additions made by the various scribes. At first these additions were carefully distinguished from the original text, but eventually they became part of it. The book has three parts as follows:
the Ordinary of the Mass
the Proper of the Milas for the year beginning with Christmas Eve, but without any Masses for the Sundays after Epiphany and Pentecost
the prayers for ordinations