0 to be in charge of or to lead a ceremony or other public event:
1 to be in charge of a sports event and make decisions about the rules of play, or to lead a ceremony or other public event:
The officiating priest places wax and mutton fat in their hands.
The judge is in a solemn, censorious setting, officiating over important matters.
Order and ministry being one, the laity could not preach, officiate, or confess.
An alternative explanation is that it was originally devised to prevent contamination between the criminal, citizen and those officiating at the trial.
One member of this house officiated at ceremonies conducted at the shrine.
In some cases these are relatively mundane services, such as children's schooling or officiating at marriages and funerals.
She is unable to be with us this afternoon, because she is officiating at the opening of a major highways project.
He remained in the tabernacle, however, to officiate in other capacities on later occasions.