Bible Dictionaries
Protocanonical

1910 New Catholic Dictionary

Referring to those books of the Old Testament whose canonicity was never questioned. The term was probably first used by Sixtus of Siena in the 16th century to distinguish the accepted books of the Bible from the deuterocanonical writings, whose divinely inspired character had been for a time disputed.

Bibliography Information
Entry for 'Protocanonical'. 1910 New Catholic Dictionary. https://www.studylight.org/​dictionaries/​eng/​ncd/​p/protocanonical.html. 1910.