OFFICIANT

officiant

(noun) a clergyman who officiates at a religious ceremony or service

Source: WordNet® 3.1

Noun

officiant (plural officiants)

A person who officiates at a religious ceremony (other than the Eucharist)

A person who officiates at a civil (non-religious) wedding ceremony.

Source: Wiktionary

Of*fi"ciant, n. Etym: [L. officians, p.pr. See Officiate.] (Eccl.)

Definition: The officer who officiates or performs an office, as the burial office. Shipley.

Source: Webster’s Unabridged Dictionary 1913 Edition