cen·te·na·ry /senˈtiːnəri $ -ˈten-, ˈsentəneri/ noun (plural centenaries) especially British EnglishBrE (also centennial /senˈteniəl/ especially American EnglishAmE) [countableC]
TMCthe day or year exactly 100 years after a particular event 一百周年(纪念)
centenary of
a concert to mark the centenary of the composer’s birth