vigesimal

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adjective vi·ges·i·mal \vī-ˈje-sə-məl\

Definition of vigesimal

  1. :  based on the number 20

Origin and Etymology of vigesimal

Latin vicesimus, vigesimus twentieth; akin to Latin viginti twenty, Greek eikosi


First Known Use: circa 1656

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capable of being understood in two ways

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