Etymology

From the name which the book bears in the Septuagint (Δευτερουόμιου) and in the Vulgate (Deuteronomium). This is based upon the erroneous Septuagint rendering of "mishnah ha-torah ha-zot" (xvii. 18), which grammatically can mean only "a repetition [that is, a copy] of this law," but which is rendered by the Septuagint τὸ Δευτερουόμιου τοῦτο, as though the expression meant "this repetition of the law."

Proper noun

1. The fifth of the Books of Moses in the Old Testament of the Bible, the fifth book in the Torah.