vicenary

adjective

vic·​e·​nary

ˈvisəˌnerē,

-ri

1

: containing 20

2

: based on the number 20 : vigesimal

Word History

Etymology

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

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