Adjective:
Books that aren’t included in the biblical canon, but are biblical-adjacent scriptures relevant to biblical history or doctrine, e.g. The Book of Enoch, The Book of Jubilees, The Gospel of Thomas.
See also: Apocrypha, Speudepigrapha
Etymology: Play on the term “extra-curricular.”
Coined by Sleepingchaser
Person a: “Is the book of Enoch in the Bible?”
Person b: “Nah man. It’s extra-biblicular.”
Student: “Are we required to read the Book of Jubilees?”
Teacher: “No, it’s just extra-biblicular literature.”