1. to act as arbiter upon (a disputed question) : to settle (a dispute between two people or groups) after hearing the arguments and opinions of both. Appointed arbitrator reviews the case to decide a just resolution and award.To make an official decision that ends a legal disagreement between people or groups without the need for the disagreement to be solved in court. The Arbitrator is responsible for ruling on all pre-hearing motions, other than those listed in Rule 74(d)(1) of the Arizona Rules of Civil Procedure. Arbitration is a dispute resolution system. New Prime brought up the arbitration provision in the employment agreement, saying the case needed to be taken out of court and arbitrated. Arbitration Clause Defined. Arbitration clauses, also known as arbitration agreements or arbitration provisions, are alternative dispute resolutions. The word arbitrate can also be used in a more general way meaning "to determine or settle a dispute," similar to the word mediate. The presentation was to.