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Definition of Vicennial
1. Adjective. Occurring once every 20 years.
Partainyms: Twenty
Definition of Vicennial
1. a. Lasting or comprising twenty years.
2. a. Lasting or comprising twenty years.
Definition of Vicennial
1. Adjective. Occurring every twenty years. ¹
2. Adjective. Lasting twenty years. ¹
¹ Source: wiktionary.com
Definition of Vicennial
1. [adj]