Definition of celebration noun from the Oxford Advanced Learner's Dictionary

Oxford3000

celebration

noun
ˌselɪˈbreɪʃn
 
; ˌselɪˈbreɪʃn
 
 
1 [countable] a special event that people organize in order to celebrate somethingbirthday/wedding celebrations2 [uncountable, countable] the act of celebrating somethingHer triumph was a cause for celebration.a party in celebration of their fiftieth wedding anniversaryThe service was a celebration of his life (= praised what he had done in his life).