<p><strong>Noun</strong></p><ul><li>Finance: the simultaneous purchase and sale of the same securities, commodities, or foreign exchange in different markets to profit from unequal prices.</li><li>Archaic: arbitration.</li></ul><p><strong>Verb</strong></p><ul><li>(used without object) ar·bi·traged, ar·bi·trag·ing.</li><li>Finance: to engage in arbitrage.</li></ul>