Vicennial

[Vi*cen·ni*al]

Occurring once every 20 years

...

Lasting or comprising twenty years.

Adjective
occurring once every 20 years

a.
Lasting or comprising twenty years.

a.
Happening once in twenty years; as, a vicennial celebration.

Vicennial

Vi*cen"ni*al , a. [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.

Lasting or comprising twenty years.

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Usage Examples
Misspelled Form

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