How do you spell Arbitrate

Available Definitions:
1)  v. t. - To hear and decide, as arbitrators; as, to choose to arbitrate a disputed case.
2)  v. t. - To decide, or determine generally.
3)  v. i. - To decide; to determine.
4)  v. i. - To act as arbitrator or judge; as, to arbitrate upon several reports; to arbitrate in disputes among neighbors; to arbitrate between parties to a suit.