computer science A bit that is used in an error detection procedure in which a 0 or 1 is added to each group of bits so that it will have either an odd number of 1's or an even number of 1's; e.g., if the parity is odd then any group of bits that arrives with an even number of 1's must contain an error.

synonyms: check bit, parity.

Dutch: pariteitsbit
Polish: bit parzystości