Decretum.Gratiani
A New Law Dictionary and Glossary · Alexander M. Burrill · 1850
A New Law Dictionary and Glossary
Lat. Gratian's decree, or decretum, A collection of ecclesiastical law in three books or parts, made in the year 1151, by Gratian, a Benedictine monk of Bologna, being the oldest as well as the first in order of the collections which together form the body of the Roman canon law.
1 BL Com. 82. 1 Neves' Hist Eng. Law, 67. 1 Mackeld. Civ. Law, 61, § 93, Kaufmann's note.