quin·cen·ten·ni·al英ˌkwɪnsenˈteniːəl美ˌkwɪnsɛnˈtɛniəlAHDkwĭn'sĕn-tĕnʹē-əl高COCA⁹¹³³⁸BNC¹⁷³⁹⁹⁵⁺² 基本英英近义反义 adj.第五百年的⁶⁰;五百年的⁴⁰ Noun: the 500th anniversary or the celebration of it Adjective: of or relating to a 500th anniversary;
the quincentennial celebration of the founding of the city