/ ˈdiːkən; NAmE / noun
1.
(in the Roman Catholic, Anglican and Orthodox Churches) a religious leader just below the rank of a priest
2.
(in some Nonconformist Churches) a person who is not a member of the clergy , but who helps a minister with church business affairs
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WORD ORIGIN
Old English diacon , via ecclesiastical Latin from Greek diakonos servant (in ecclesiastical Greek Christian minister).