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