What is the meaning of parity?

noun

• Obstetrics) the number of liveborn children a woman has delivered. (
  • usage: "the parity of the mother must be considered"; "a bipara is a woman who has given birth to two children"
  • synonyms: para
• Mathematics) a relation between a pair of integers: if both integers are odd or both are even they have the same parity; if one is odd and the other is even they have different parity. (
  • usage: "parity is often used to check the integrity of transmitted data"
• 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: parity bit, check bit
• Physics) parity is conserved in a universe in which the laws of physics are the same in a right-handed system of coordinates as in a left-handed system.
  • synonyms: conservation of parity, space-reflection symmetry, mirror symmetry
• Functional equality. .