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Definition of duodecimal:

  1. 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.
  2. A twelfth part; as, the duodecimals of an inch.
  3. Proceeding in computation by twelves; expressed in the scale of twelves.


twelfth, one-twelfth, quantitative, twelfth part.

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