octateuch

The story

1. Medieval Greek · derived fromὀκτάτευχος [βίβλος]“[a volume] containing [the first] eight books [of the Old Testament]”
2. Late Latin · derived fromoctateuchus
3. English todayoctateuch

From the Late Latin octateuchus, from the Medieval Greek ὀκτάτευχος [βίβλος] (oktáteukhos [bíblos], “[a volume] containing [the first] eight books [of the Old Testament]”), from the Ancient Greek ὀκτα- (okta-, “eight”, combining variant of ὀκτώ) + τεῦχος (teûkhos, “book”).