# sestercentennial

> English word · Noun

## Definitions
1. A 250th anniversary.

## Etymology
From Latin sēmis + tercentennial, literally “two hundred fiftieth anniversary”.

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