reserve currency
US /rɪˈzɜːrv ˌkɜːr.ən.si/
UK /rɪˈzɜːrv ˌkɜːr.ən.si/

1.
moeda de reserva
a foreign currency held by central banks and other monetary authorities as a means of payment or to support their domestic currency
:
•
The US dollar has long been the world's primary reserve currency.
O dólar americano tem sido há muito tempo a principal moeda de reserva do mundo.
•
Some countries are advocating for a new global reserve currency to reduce reliance on the dollar.
Alguns países estão defendendo uma nova moeda de reserva global para reduzir a dependência do dólar.