quincentenary

A 500th anniversary or celebration.

Of or relating to a span of 500 years or to a 500th anniversary.

Relating to or consisting of five hundred, especially five hundred years.

That which consists of or comprehends five hundred.

A five-hundredth anniversary.

A five-hundredth anniversary.

Pertaining to a quincentenary; quincentennial.

the 500th anniversary (or the celebration of it)

of or relating to a 500th anniversary