# vicennium

> English word · Noun

## Definitions
1. A period of twenty years.

## Etymology
From Latin vicennium, from vīcennis (“20-year”) + -ium, from vīciēs (“20 times”) + annus (“year”) + -is (suffix forming compound adjectives). Equivalent to vicennial + -ium.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/vicennium