We found 2 dictionaries that define the word sestercentennial:

General (2 matching dictionaries)

1. Sestercentennial: Wikipedia, the Free Encyclopedia
2. sestercentennial: Wiktionary

Definitions from Wiktionary (sestercentennial) ▸ noun:  A 250th anniversary. ▸ Words similar to sestercentennial ▸ Usage examples for sestercentennial ▸ Idioms related to sestercentennial ▸ Wikipedia articles (New!) ▸ Popular adjectives describing sestercentennial ▸ Words that often appear near sestercentennial ▸ Rhymes of sestercentennial ▸ Invented words related to sestercentennial