Definition of bicentenary noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌbaɪsenˈtiːnəri//
; NAmE NAmE//ˌbaɪsenˈtenəri//
(pl. bicentenaries)(British English)(especially North American English bicentennial)
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the year, or the day, when you celebrate an important event that happened exactly 200 years earlier Mozart’s bicentenary to celebrate/mark the bicentenary of somebody/something