currency

/ˈkɜrənsi/
noun
  1. The system of money used in a particular country.
    • The country's currency lost value against the U.S. dollar.
    • The euro is the currency used in many European countries.
    • She exchanged her dollars for local currency at the airport.
  2. The state of being accepted or used by many people; general acceptance or popularity.
    • The idea has little currency in modern scientific circles.
    • That slang term has gained currency among teenagers.
    • His theories achieved wide currency in the 1990s.
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