# trimillennial

> English word · Noun

## Definitions
1. The 3,000th anniversary of an event or happening.

## Etymology
From Latin trimillennialis, from tri- + mill- (“thousand”) + Latin enni(us) (“year”) + -al.

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