quadricentennial
nounEtymology From quadri- + centennial.
1
A 400th anniversary.
- The Cayuga fairground proposal recalled other Pan-American heritage themes that emerged with the quadricentennials. There was mention of a theme area on the island where reproductions of ancient structures of the Americas would be juxtaposed with reproductions of the birthplaces of U.S. American historical figures.2011, Robert Alexander González, Designing Pan-America, page 54: