BICENTENARY Meaning of BICENTENARY in English [ ˌbʌɪsɛn'ti:nəri , -'tɛn- ]■ noun ( plural bicentenaries ) the two-hundredth anniversary of a significant event.Derivativesbicentennial noun & adjective Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004