Meaning of “celebratory” - Learner’s Dictionary

celebratory

adjective uk us /ˌseləˈbreɪtəri/ US  /ˈseləbrətɔːri/

done to celebrate something or wanting to celebrate something:

a celebratory dinner
in a celebratory mood

(Definition of “celebratory” from the Cambridge Learner’s Dictionary © Cambridge University Press)