# tricennial

> English word · Adjective

## Definitions
1. Of, related to, lasting, or occurring once every thirty years.
2. Of or related to a tricennalia, the celebrations marking the 30th year of a Roman emperor's rule.

## Etymology
From Latin trīcennium (“30-year period”) + -al, from trīcennis (“30-year”) + -ium, from trīciēs (“30 times”) + annus (“year”) + -is. Compare Latin tricennalis. Equivalent to tri- + decennial. Doublet of tricennal.

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