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duodenary

adjective
du·​o·​den·​a·​ry | \ ¦d(y)üə¦denərē, -dēn-\

Definition of duodenary

1 : containing 12 a duodenary cycle of years
2 : based on the number 12 a duodenary system of computation

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History and Etymology for duodenary

Latin duodenarius, from duodeni twelve each (from duodecim twelve) + -arius -ary

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