Definify.com

Webster 1913 Edition

Vicennial

Vi-cen′ni-al

,

Adj.

[L.

vicennium

a period of twenty years;

viceni

twenty +

annus

year.]

1.

Lasting or comprising twenty years.

2.

Happening once in twenty years;

as, a

vicennial

celebration

.

Definition 2024

vicennial

vicennial

English

Adjective

vicennial ‎(not comparable)

Occurring once every twenty years.
Lasting for twenty years.

Derived terms

vicennials

Related terms

(noun): vicennium