Definition of vicenary
1 : containing 20
2 : based on the number 20 : vigesimal
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Origin and Etymology of vicenary
Latin vicenarius, from viceni twenty each + -arius -ary; akin to Latin viginti twenty; akin to Old Irish fiche twenty, Greek eikosi (Doric ϝikati), Sanskrit viṁśati; all from an Indo-European compound whose 1st constituent was an Indo-European word meaning “two” (represented by Sanskrit vi apart), and whose 2d constituent is represented by Latin decem ten — more at with, ten
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