Adjective: quincentennial
- Of or relating to a 500th anniversary
"the quincentennial celebration of the founding of the city";
- quincentenary
- The 500th anniversary (or the celebration of it)
"Columbus's voyage was commemorated during its quincentennial in 1992";
- quincentenary
Derived forms: quincentennials
Type of: anniversary, day of remembrance
Encyclopedia: Quincentennial