# tricennium

> English word · Noun

## Definitions
1. A period of thirty years.

## Etymology
From Latin trīcennium, from trīcennis (“30-year”) + -ium, from trīciēs (“30 times”) + annus (“year”) + -is (“forming compound adjectives”). Equivalent to tricennial + -ium.

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