the act of refusing to to allow someone to be involved in the Church, especially the Roman Catholic Church, and to take part in the ceremony of Communion

They received warnings that they were in danger of excommunication. 他们收到了警告，如不改正将被逐出教会。

Two pastors face church trials, suspensions, and excommunication. 有两位新教牧师面临宗教审判、停职及禁止参加圣餐。