heptateuch
/ˈhɛptəˌtjuːk/Definitions
1. noun
A collection of seven sacred books or a group of seven related works, especially the seven books of the Greek version of the Septuagint, or the seven books of the Greek version of the Septuagint, which are not found in the Hebrew Bible.
“The heptateuch is an essential part of the Jewish scriptures.”