of or constituting a second or subsequent canon; specif., designating certain Biblical books accepted as canonical in the Roman Catholic Church, but held by Protestants to be apocryphal
Origin of deuterocanonicaldeutero- + canonical
Of, relating to, or being a second canon, especially that consisting of sections of the Old and New Testaments not included in the original Roman Catholic canon but accepted by theologians in 1548 at the Council of Trent.
Deuterocanonical books include :
from Ancient Greek δεύτερος (deuteros, “second”) + κανών (kanōn, “rule, model”).