Noun
English Wikipedia has an article on:opening ceremonyWikipedia
opening ceremony (plural opening ceremonies)
A ceremony to mark the official opening of a building or event.
The draws will see 16 men's, eight women's and eight wheelchair nations drawn into their respective groups for the event, which begins with the men's Opening Ceremony on October 23 2021 at St James' Park in Newcastle. Source: Internet
In 2017, it partnered with Opening Ceremony to present “Changers, a Dance Story,” a performance written and directed by Spike Jonze at NYFW. Source: Internet