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An official who was formerly sent to carry out the orders of a civil or ecclesiastical court.
[Middle English, from Latin appāritor, from appāritus, past participle of appārēre, to appear; see appear.]
(Law) an officer who summons witnesses and executes the orders of an ecclesiastical and (formerly) a civil court
[C15: from Latin: public servant, from appārēre to appear]
ap•par•i•tor(əˈpær ɪ tər)
(in ancient Rome) a subordinate official of a magistrate or court.
[1250–1300; Middle English < Latin appāritor]