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Money: any asset that can be used in making purchases.
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Medium of exchange: asset used in purchasing goods and services.
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Unit of account: basic measure of economic value.
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Store of value: asset that serves as a means of holding wealth.
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M1: sum of currency outstanding and balances held in checking accounts.
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M2: all the assets in M1 plus some additional assets that are usable in making payments but at greater cost or inconvenience than currency or checks.
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Bank reserves: cash or similar assets held by commercial banks for the purpose of meeting depositor withdrawals and payments.
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100% reserve banking: situation in which banks' reserves equal 100% of their deposits.
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Reserve-deposit ratio: bank reserves divided by deposits.
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Fractional-reserve banking system: banking system in which bank reserves are less than deposits so that the reserve-deposit ratio is less than 100%.
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Federal Reserve System (or the Fed): central bank of the United States.
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Monetary policy: determination of the nation's money supply.
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Open-market sale: sale by the Fed of government bonds to the public for the purpose of reducing bank reserves and the money supply.
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Open-market operations: open-market purchases and open-market sales.
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Velocity: measure of the speed at which money changes hands in transactions involving final goods and services, or, equivalently, nominal GDP divided by the stock of money.
Quantity equation: money times velocity equals nominal GDP.
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