Русско-англо-русский юридический словарь

Purchasing power (Each retroactively called adjusted for inflation) is the number of goods or services that can be purchased with a unit of currency. (Wikipedia)

Inflation is the rate of change in the level of prices for goods and services, which affects the purchasing power of money. (BBC News)

This is why we do not anticipate the growing certainty that the purchasing power of money will fall and not increase, embarking on the same value-path as the German mark and Austrian crown in 1920-23. (The Market Oracle)

Transactions in the foreign exchange market provide a mechanism for transferring purchasing power from one currency to another. (WallStreetMojo)