Definition of arbitrator noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈɑːbɪtreɪtə(r)//
; NAmE NAmE//ˈɑːrbɪtreɪtər//
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a person who is chosen to settle a disagreement An outside arbitrator may be appointed in such cases. Where no agreement can be reached, the matter will be referred to an independent arbitrator. Word Originlate Middle English: from late Latin, from the verb arbitrari, from arbiter ‘judge, supreme ruler’.
See the Oxford Advanced American Dictionary entry: arbitrator