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redenomination

n. The process of redenominate.

Wikipedia
Redenomination

Redenomination is the process of changing the face value of banknotes or coins used in circulating currency. It may be done because inflation has made the currency unit so small that only large denominations of the currency are circulated. In such cases the name of the currency may change or the original name may be used with a temporary qualifier such as "new". Redenomination may be done for other reasons such as adopting a new currency as with the Euro or decimalization. The article deals with these various types of redenomination in detail.