D0176200 (do͞o′tə-rō′kə-nŏn′ĭ-kəl, dyo͞o′-)adj. 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.EncyclopediaSeedeuterocanonical books