ar·bi·trage 
(ärbĭ-träzh′)
(ärbĭ-träzh′)n.
The simultaneous purchase and sale of equivalent assets or of the same asset in multiple markets in order to exploit a temporary discrepancy in prices.
intr.v. ar·bi·traged, ar·bi·trag·ing, ar·bi·trag·es
To be involved in arbitrage.
[Middle English, arbitration, from Old French, from arbitrer, to judge, from Latin arbitrārī, to give judgment; see ARBITRATE.]