If the purchasing power of the u.s. dollar rises relative to other currencies, it is known as a(n)  Relative Purchasing Power Parity  of the u.s. dollar. 
What Is Purchasing Power?
- The purchasing power of a currency is the amount of goods or services that one unit of money can purchase. Inflation can cause it to deteriorate over time. 
- Purchasing power is sometimes referred to as a currency's purchasing power.
- The cash amount of credit available to a customer based on the current marginable securities in the customer's brokerage account is referred to as purchasing or buying power in investment parlance.
- Consider your purchasing power as if you were earning the same pay as your grandfather 40 years ago. 
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