/ˌænɪˈvɜ:səri ||; ˌænəˈvɝsərɪ/noun [C] (plural anniversaries) a day that is exactly a year or a number of years after a special or important event 周年；周年纪念日: the hundredth anniversary of the country's independence 国家独立一百周年纪念日a wedding anniversary 结婚周年纪念 ☞Look at birthday. 参看 birthday。