n. One who waits on a person; an attendant; an assistant.n. In the Roman Catholic Church, one ordained to the fourth and highest of the minor orders, ranking immediately below the subdeacon. See orders.n. In astronomy, an attendant or accompanying star or other heavenly body; a satellite.n. Sometimes written acolyth, and formerly also acholithite, acolythe, acolythist, acolothist.