What does parity mean?

Definitions for parity
ˈpær ɪ tipar·i·ty

This dictionary definitions page includes all the possible meanings, example usage and translations of the word parity.

Princeton's WordNet

  1. parity, paranoun

    (obstetrics) the number of liveborn children a woman has delivered

    "the parity of the mother must be considered"; "a bipara is a woman who has given birth to two children"

  2. paritynoun

    (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

    "parity is often used to check the integrity of transmitted data"

  3. parity bit, parity, check bitnoun

    (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

  4. parity, conservation of parity, space-reflection symmetry, mirror symmetrynoun

    (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

  5. paritynoun

    functional equality


  1. Paritynoun

    Specifically: (Finance) Equivalence in value to the currency of another country.

  2. Paritynoun

    (Physics) A property assigned to elementary particles, conceptualized as a form of symmetry, representing the fact that no fundamental distinctions can be observed between right-handed and left-handed systems of particles in their interactions, and supported by the typical observation that the total parity of a system is unchanged as particles are created or annihilated; however, certain interactions involving the weak force have been shown to violate the principle of conservation of parity.

  3. Paritynoun

    (Physics) A property of the wave function of a system, which takes the value of +1 or -1, indicating whether the value of the wave function changes sign if each of the variables of the system is replaced by its negative.

  4. Paritynoun

    (Med.) The condition of having borne a child or children, alive or dead.

  5. Paritynoun

    (Math.) The property of being even or odd; as, 3 has odd parity, but 6 has even parity.

  6. Paritynoun

    Hence: (Computers) The property of having an even or odd number of bits set to the value of 1 (as opposed to 0); -- applied to bytes or larger groups of bits in a data structure. It is used mostly in the process of parity checking. The parity of a data structure can be changed by changing the value of the parity bit.

Samuel Johnson's Dictionary

  1. Paritynoun

    Equality; resemblance.

    Etymology: parité, Fr. paritas, Lat.

    We may here justly tax the dishonesty and shamefulness of the mouths, who have upbraided us with the opinion of a certain stoical parity of sins. Joseph Hall.

    That Christ or his apostles ever commanded to set up such a parity of presbyters, and in such a way as those Scots endeavour, I think is not very disputable. Charles I .

    Survey the total set of animals, and we may, in their legs or organs of progression, observe an equality of length and parity of numeration; that is, not any to have an odd leg, or the movers of one side not exactly answered by the other. Thomas Browne, Vulgar Errours.

    Those accidental occurrences, which excited Socrates to the discovery of such an invention, might fall in with that man that is of a perfect parity with Socrates. Matthew Hale.

    Their agreement, in essential characters, makes rather an identity than a parity. Joseph Glanvill.

    Women could not live in that parity and equality of expence with their husbands, as now they do. John Graunt.

    By an exact parity of reason, we may argue, if a man has no sense of those kindnesses that pass upon him, from one like himself, whom he sees and knows, how much less shall his heart be affected with the grateful sense of his favours, whom he converses with only by imperfect speculations, by the discourses of reason, or the discoveries of faith Robert South, Sermons.

    By parity of reason, we must expect a peace so much worse about two years hence. Jonathan Swift, Miscellanies.


  1. parity

    Parity is a mathematical or computational concept often used to detect errors. In the broadest sense, 'parity' refers to the evenness or oddness of a number. It is usually applied in binary code, where the 'parity bit' is added to ensure the total number of '1' bits are either always even (even parity) or always odd (odd parity). This helps in detecting errors in data transmission. Parity is also used in various computing and mathematical algorithms to maintain data integrity.

Webster Dictionary

  1. Paritynoun

    the quality or condition of being equal or equivalent; A like state or degree; equality; close correspondence; analogy; as, parity of reasoning

  2. Etymology: [L. paritas, fr. par, paris, equal: cf. F. parit. See Pair, Peer an equal.]


  1. Parity

    In physics, a parity transformation is the flip in the sign of one spatial coordinate. In three dimensions, it is also commonly described by the simultaneous flip in the sign of all three spatial coordinates: It can also be thought of as a test for chirality of a phenomenon, in that performing a parity inversion transforms a chiral phenomenon into its mirror image. A parity transformation on something achiral, on the other hand, can be viewed as an identity transformation. A 3×3 matrix representation of P would have determinant equal to −1, and hence cannot reduce to a rotation which has a determinant equal to 1. The corresponding mathematical notion is that of a point reflection. In a two-dimensional plane, parity is not a simultaneous flip of all coordinates, which would be the same as a rotation by 180 degrees. It is important that the determinant of the P matrix be −1, which does not happen for 180 degree rotation in 2-D where a parity transformation flips the sign of either x or y, not both.

Chambers 20th Century Dictionary

  1. Parity

    par′i-ti, n. state of being equal in rank, position, quality, &c.: resemblance: analogy. [Fr. parité—L. paritaspar, equal.]

U.S. National Library of Medicine

  1. Parity

    The number of offspring a female has borne. It is contrasted with GRAVIDITY, which refers to the number of pregnancies, regardless of outcome.

How to pronounce parity?

How to say parity in sign language?


  1. Chaldean Numerology

    The numerical value of parity in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of parity in Pythagorean Numerology is: 8

Examples of parity in a Sentence

  1. The Commission:

    Booking.com has proposed to abandon the parity requirement in respect of prices which the hotel makes available to other online travel agents.

  2. Kerry Craig:

    The big question is whether we will see parity against the euro.

  3. Jonathan Leitch:

    Coastal refineries would get the benefit of being able to sell more of their production into the local market and so achieve higher prices. Their surplus would also get a better value in the export markets, inland refineries would get a benefit from increased local (gasoline) demand and could maintain import parity pricing rather than export parity pricing in some cases.

  4. Jennifer Siebel-Newsom:

    Frankly, I think red carpet correspondents avoid asking female talent big questions about racial and gender diversity in Hollywood because we’ve come to accept a superficial status quo from the entertainment and media industries, the more people who call out these stereotypes through actions like #AskHerMore, the sooner we can achieve parity and a healthier culture.

  5. John Bailey:

    This year has the largest class of women nominees. Far from parity, and of course we need to do better. Gender parity is an industry matter, not just an Academy matter, inclusion, diversity, racial, ethnic and gender equality are not just buzzwords. They go to the heart of what our Academy is doing.

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Translations for parity

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"parity." Definitions.net. STANDS4 LLC, 2023. Web. 9 Dec. 2023. <https://www.definitions.net/definition/parity>.

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    causing disapproval or protest
    • A. obnoxious
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