Arbitrate (verb)

1. To act as an arbitrator in (a dispute) in order to make a decision or settle a matter.
2. To make a decision or settle a matter in dispute.

Origin:

From latin "arbitratus", past participle of "arbitrare" meaning "to judge, decide".

Examples:

1. The two parties agreed to let a neutral third party arbitrate their dispute.
2. The union has asked the federal government to arbitrate the contract dispute.
3. He was chosen to arbitrate the dispute between the two companies.
4. The court ordered the parties to arbitrate the dispute.
5. The judge had the power to arbitrate the case.