quincentennial
quin·cen·ten·nial
adjective
1.
of or relating to a 500th anniversary
- “the quincentennial celebration of the founding of the city”
noun
1.
the 500th anniversary (or the celebration of it)
Origin
From quin- (prefix meaning ‘five’) + centennial (“100-year; 100-year anniversary”).
Related words
Broader terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.