duodecimal /dū-ō-desˈi-məl/

1. Computed by twelves
2. Twelfth

duodecˈimals plural noun

A method of calculating the area of a rectangle when the length and breadth are stated in feet and inches

duodecimal system noun

1. A system of numbers in which each denomination is twelve times the next, instead of ten times, as in ordinary (decimal) arithmetic
2. The name given to the division of unity into twelve equal parts

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