tercentenary
ter-cen-te-na-ry
noun
The 300th anniversary of an event or its associated celebration.
"The university marked its tercentenary with a special ceremony."
Thesaurus
Synonyms: tercentennial, triennial
ter-cen-te-na-ry
The 300th anniversary of an event or its associated celebration.
"The university marked its tercentenary with a special ceremony."
Synonyms: tercentennial, triennial