Русско-англо-русский юридический словарь

monetary union Two or more countries with a single currency, or different currencies having a fixed mutual exchange rate monitored and controlled by one central bank (or several central banks with closely coordinated monetary policies). (BusinessDictionary)

Only Bulgaria seems set to join the single currency in 2024. (BBC)

There are considerable obstacles in the way of developing a single currency for Asean. (BBC)

Does Africa need a single currency? The idea of a single currency being used across the continent has been proposed for more than 30 years. (BBC)