1. inconvertible paper money; fiat money
Wikipedia definition
2. Fiat moneyFiat money is money that derives its value from government regulation or law: the initial value of fiat money is established by government decree. The term fiat currency is also used when the fiat money is used as the main currency of the country. The term derives from the Latin fiat, meaning "let it be done" or "it shall be". Fiat money originated in 11th century China, and its use became widespread during the Yuan and Ming dynasties.
Read “Fiat money” on English Wikipedia
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