Also found in: Dictionary, Medical, Encyclopedia, Wikipedia.
A very high rate of inflation, especially sustained over a long period of time. While there is no set numeric definition, it is associated with inflation percentages in the millions and billions. Hyperinflation is almost always caused by poor monetary policy on the part of the government. For example, a government that rapidly increases the money supply without a corresponding growth in GDP often undergoes hyperinflation. This situation often leads to (though it may also be caused by) wider economic instability, and may lead to a lack of confidence in the government. As a result, hyperinflation that persists for a long time may lead to the government issuing a new currency entirely.
A very high level of inflation that tends to result in the breakdown of the monetary system, the hoarding of goods, and difficulty in achieving real economic growth. The classic case of hyperinflation occurred in Germany during the 1920s. Hyperinflation, which tends to motivate people to own real goods, adversely affects security prices.