Definitions for "Deuterocanonical"
Pertaining to a second canon, or ecclesiastical writing of inferior authority; -- said of the Apocrypha, certain Epistles, etc.
From the Greek deutero, second -- of or constituting a second or subsequent canon; specifically, designating certain Biblical books accepted by the Roman Catholic Church as canonical but held by Protestants to be apocryphal.
Pertaining to or constituting a second canon: applied to the books or parts of books of the Old or New Testament whose authenticity and inspiration were at first contested and afterward admitted by the Roman Catholic Church; in Protestant churches, the contested parts of the Old Testament being considered extra-canonical