octateuch

from The Century Dictionary.

• noun A collection of eight books; specifically, the first eight books of the Old Testament considered as forming one volume or series of books. Also Octoteuch.

from the GNU version of the Collaborative International Dictionary of English.

• noun rare A collection of eight books; especially, the first eight books of the Old Testament.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A collection of eight books; especially, the first eight books of the Old Testament.