Computers: number that is odd or even. Usually when bits (1's and 0's) are transferred or stored, there is an extra bit added so that the total number of 1's is always odd (alternatively, always even). This is referred to as the parity of the data. Since a transmission error has a one-half chance of altering the parity, frequent errors will warn the receiver of the data of possible errors.

Economics: term designating a constant spread between prices; for example, having a constant relationship between domestic and world sugar prices.

Labor law: salary equality among workers such as policemen and firemen.