„Parity“

1. Equality in amount or value.

2. Equivalence of prices of goods or services in different markets

3. The relationship between two currencies such that they are exchangeable for each other at par or at the official rate of exchange.

4. Equivalence of prices of farm products (or farm income) to those existing at a former time, or to the general cost of living.

Krugman, P. & Obstfeld, M. (2009). International Economics: Theory and Policy. 8th edition. Boston: Pearson Addison Wesley.