noun. a clergyman who officiates at a religious ceremony or service.
1. Noun, singular or mass When getting married in a different state, couples must make sure that their choice of an officiant is a person who can legally perform weddings in that state. 2. Adjective If your county does not automatically send you a certificate, then you must trust that your new spouse or your officiant put it in the mail and that the mail carrier got it to the right place.