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currency (EN)
noun

noun “currency”

singular currency, plural currencies or uncountable
  1. the system of money used in a country or region
    Tourists need to exchange their dollars for local currency before traveling.
  2. the money used in transactions, especially coins and paper bills
    After paying for groceries, she counted the remaining currency in her wallet.
  3. the fact that something is widely accepted or in use
    The theory began to gain currency in scientific circles.