High Quality Content by WIKIPEDIA articles! Eurodollars are time deposits denominated in U.S. dollars at banks outside the United States, and thus are not under the jurisdiction of the Federal Reserve. Consequently, such deposits are subject to much less regulation than similar deposits within the U.S., allowing for higher margins. The term was originally coined for U.S. dollars in European banks, but it expanded over the years to its present definition: a U.S. dollar-denominated deposit in Tokyo or Beijing would be likewise deemed a Eurodollar deposit. There is no connection with the euro currency or the euro zone.