bicentennial
nounNAmE//ˌbaɪsɛnˈtɛniəl//
(also bicentenary NAmE//ˌbaɪsɛnˈtɛnəri//
) bicentennial celebrationsSee bicentennial in the Oxford Advanced Learner's Dictionary
Check pronunciation: bicentennial
Definition of bicentennial noun from the Oxford Advanced American Dictionary