IPA: /kwɪnˈsɛntənˌɛri/
KK: /kwɪnˈsɛntənˌɛri/
Relating to a period of five hundred years or to the celebration of a five hundredth anniversary.
The quincentenary of the city's founding was celebrated with a grand festival.
A celebration or event marking the 500th anniversary of something.
The city held a grand festival to commemorate its quincentenary.
Quincentenary → It is formed from "quinque" (meaning five) and "centum" (meaning hundred) and the suffix "-ary" (meaning relating to). The word refers to a period of five hundred years, particularly in the context of anniversaries or celebrations.
Think of 'five' ('quinque') and 'hundred' ('centum') to remember that a quincentenary is a celebration of five hundred years.