Expressions used in Everyday Spoken English in Social and Professional contexts
Parity refers to the state of being equal or equivalent. Parity can refer to the matching values of two prices or currencies. In agricultural contexts parity is a price set by the government or other agency in order to ensure farmers' purchasing power is maintained over a period of time. In mathematics parity refers to the property of an integer with respect to being odd or even. Parity is also used in coding and binary coding as a way of detecting errors based on odd or even states. Parity can also refer to the oddness or evenness of a quantum mechanical function. Parity is also the symmetry of behaviour in the interaction of something physical with that of its mirror image. Parity can also refer to the number of times a female has given birth. Parity has particular meanings in subjects like maths, genetics, medicine, chemistry and physics but in professional contexts it is most often used in relation to currencies and exchange rates.