- RC Church the name given to various collections of canon law, esp that made by the monk Gratian in the 12th century, which forms the first part of the Corpus Juris Canonici
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Examples from the Web for decretum
But all these works were to be superseded by the Decretum of Gratian.
Gratian completed the Decretum about 1151, and probably survived some years, but I have not met with the date of his death.
Decretum est ut public recitand concessio ab Imperatore peteretur.History of the Great Reformation, Volume IV
J. H. Merle D'Aubign
As regards simony, the canons of the Decretum and the utterances of the doctors are quoted to show that it is heresy.
Episcopi by assuming that the Decretum of Gratian had not the authority of law, and was corrupt in many places.