The act of holding a ceremony, especially a wedding ceremony (commonly used as '挙式する' to mean 'to have a wedding').
来月、教会で挙式を行う予定です。
We plan to hold our wedding at a church next month.
親しい友人だけを招いて小さな挙式をした。
They had a small ceremony inviting only close friends.
挙式の後、披露宴が始まった。
After the ceremony, the reception began.