Today's New Word--Leonine Sacramentary

"The oldest of the Latin sacramentaries or liturgical books. It was erroneously attributed to Pope Leo I and was in use from the fourth to the seventh centuries. It contains neither canons nor the Ordinary of the Mass, but many propers, collects, prefaces, secrets, postcommunions, and orations, together with ordination forms. Many of these prayers are still in use today." https://www.catholicculture.org/culture/library/dictionary/index.cfm?id=34561

"The popular, though incorrect name for the earliest surviving collection of Roman Mass formularies and ordination prayers that scholars have called the Sacramentary of Verona (Sacramentarium Veronense ). The name "Leonine Sacramentary" is misleading, since it is neither a sacramentary, nor was it composed by Pope Leo I. More accurately, it is a compilation of individual libelli missarum in a single manuscript. It is a unicum, i.e., it exists in a single MS, Codex LXXXV (80) of the Chapter Library at Verona. E. A. Lowe dates it, on palaeographical grounds, as written in the first quarter of the 7th century. J. Bianchini published it in 1735, in v.4 of his Anastasius Bibliothecarius, under the title Sacramentarium Leonianum. In 1748 L. A. Muratori reedited it under the same title, but in 1754 J. A. Assemani, who gave it the title Sacramentarium Veronense, vulgo Leonianum, edited it again. In 1896 C. L. Feltoe published a handy, but inaccurate, edition, with the old title. The most recent edition is that of K. Mohlberg, who has rightly again called it Sacramentarium Veronense (Rome 1956). …" http://www.encyclopedia.com/article-1G2-3407706637/leonine-sacramentary.html

I came across this term in reading something from the Prayer Book Society, which "exists to promote Anglican belief and worship as expressed in the Common Prayer tradition and Anglican formularies since the first Book of Common Prayer of 1549 in the Church of England, on through the 1928 Prayer Book down to the present day." http://www.pbsusa.org/