quincentennial

listen to the pronunciation of quincentennial
Английский Язык - Английский Язык
of or relating to a 500th anniversary; "the quincentennial celebration of the founding of the city"
the 500th anniversary (or the celebration of it)
{i} 500th anniversary, quincentenary
{s} of or pertaining to a 500th anniversary; relating to a 500th aniversary
the 500th anniversary (or the celebration of it) of or relating to a 500th anniversary; "the quincentennial celebration of the founding of the city