centenary
noun [ C ] UK uk/senˈtiː.nər.i/ /senˈten.ər.i/ us/ˈsen.ten.er.i/ /senˈten.er.i/ (US centennial)
一百周年纪念
(the day or year that is) 100 years after an important event
centenary celebrations 百年庆典
Next year is the centenary of her death. 明年是她逝世100周年。
See also: bicentenary tercentenary