adjudicator

Etymology

noun

1. One who adjudicates.
   Rimmer ducked his body low into his chair, so just his head remained above the table top, and peered past the backs of the examinees in front of him, waiting for the adjudicator to make his move. 1989, Grant Naylor, Red Dwarf: Infinity Welcomes Careful Drivers
   The State Department has hired hundreds of new passport adjudicators, put employees to work around the clock and opened a new processing facility in Arkansas but has still been unable to meet the demand [for the issuance of new passports]. June 8 2007, Houston Chronicle