deuterocanonical

adjective

deu·​tero·​ca·​non·​i·​cal ˌdü-tə-rō-kə-ˈnä-ni-kəl 

 also  ˌdyü-

: of, relating to, or constituting the books of Scripture contained in the Septuagint but not in the Hebrew canon

Word History

Etymology

New Latin deuterocanonicus, from deuter- + Late Latin canonicus canonical

First Known Use

1684, in the meaning defined above