Duodecimal

·noun A twelfth part; as, the duodecimals of an Inch.

II. Duodecimal ·adj Proceeding in computation by twelves; expressed in the scale of twelves.

III. Duodecimal ·noun A system of numbers, whose denominations rise in a scale of twelves, as of feet and inches. The system is used chiefly by artificers in computing the superficial and solid contents of their work.