bicentenary
noun🔊/ˌbaɪsenˈtiːnəri/
🔊/ˌbaɪsenˈtenəri/
(plural bicentenaries)
(British English) (especially North American English bicentennial)
the year, or the day, when you celebrate an important event that happened exactly 200 years earlier 200 周年；200 周年纪念日 Mozart’s bicentenary 莫扎特诞辰200周年 to celebrate/mark the bicentenary of somebody/something 庆祝/纪念某人/某事诞辰一百周年