There are 2 main definitions of parity in English:

## parity 1

Pronunciation: /ˈperədē/

## noun

1The state or condition of being equal, especially regarding status or pay: parity of incomes between rural workers and those in industrial occupations
More example sentences
• Even so, you can't expect the DUP to press for the implementation of anything promoting equality of status or parity of esteem since they reject the concepts.
• They had also accepted the union's claim for pay parity for retained firefighters and will study demands for equal pay for control room staff.
• That is far from the truth as I also want a better world with equal parity to men for my wife, daughters, sisters and so on.
Synonyms
equality, equivalence, uniformity, consistency, correspondence, congruity, levelness, unity, coequality
1.1 (also purchasing parity) The value of one currency in terms of another at an established exchange rate.
Example sentences
• If there is mutual trust that the exchange rate parities agreed upon are observed, the mobility of capital will lead to identical interest rates, and there will also be a de facto common monetary policy.
• Dollarization at current parity would eliminate the currency risk on Argentina's debt so rates could come down.
• The easiest to implement would be dollarization at current parity.
1.2A system of providing farmers with consistent purchasing power by regulating prices of farm products, usually with government price supports.
2 Mathematics (Of a number) the fact of being even or odd.
Example sentences
• M is the lattice point if and only if x 1 and x 2 are of the same parity and so are y 1 and y 2.
2.1 Physics The property of a spatial wave equation that either remains the same ( even parity) or changes sign ( odd parity) under a given transformation.
Example sentences
• Elementary particles have far too many properties - such as spin, charge, colour, parity and hypercharge - to be truly elementary.
• In other words, particle interactions should conserve parity.
2.2 Physics The value of a quantum number corresponding to parity.
Example sentences
• Others, such as parity, are broken by small amounts, and the corresponding conservation law therefore only holds approximately.
2.3 Computing A function whose being even (or odd) provides a check on a set of binary values.
Example sentences
• This error management system provides the ability to monitor CRC, parity, and encoding errors.
• Often, during the process of reading all data from the disk to recompute the missing data and parity, bad sectors may be encountered, and it is no longer possible to rebuild the array.
• The only way to achieve this objective is with redundancy built-in throughout the I / O subsystem and with the data protected by a parity or mirrored array.

## Origin

Late 16th century: from late Latin paritas, from par 'equal'.

More
• pair from Middle English:

Pair comes from Latin paria ‘equal things’, formed from par ‘equal’. Latin par also lies behind compare (Late Middle English) ‘to pair with, bring together’; disparage (Middle English) originally ‘a mis-pairing especially in marriage’, later ‘to discredit’; nonpareil (Late Middle English) ‘not equalled’ (taken directly from the French); par (late 16th century) ‘equal’, a golfing term from L19th; parity [L16] ‘equalness’; peer (Middle English) ‘equal’; and umpire (Middle English) originally noumpere, from the same source as nonpareil, because an umpire is above all the players. A noumpere was later re-interpreted as ‘an umpire’ and the initial ‘n’ was lost.

## Words that rhyme with parity

angularity, barbarity, bipolarity, charity, circularity, clarity, complementarity, familiarity, granularity, hilarity, insularity, irregularity, jocularity, linearity, particularity, peculiarity, polarity, popularity, regularity, secularity, similarity, singularity, solidarity, subsidiarity, unitarity, vernacularity, vulgarity

## For editors and proofreaders

Syllabification: par·i·ty

## parity 2

Pronunciation: /ˈperədē/

## noun

Medicine
1The fact or condition of having borne children.
Example sentences
• Other potential confounders examined included education, body mass index, age at menarche, hormone replacement therapy, parity, and use of multivitamins.
• However, response appeared to be unrelated to atopic status or parity.
• Age and parity are important factors in the development of urinary incontinence.
1.1The number of children previously borne: very high parity (six children or more)
More example sentences
• Both the stillbirth rate and early neonatal mortality increased with parity.
• Response rates were lower in women with manual occupations and from ethnic minorities but did not differ by type of delivery, type of pain relief, parity, or age.
• Among low risk women, regardless of parity, private patients had higher age adjusted rates of instrumental delivery, especially after epidural.

## Origin

Late 19th century: from parous 'having borne offspring' (back-formation from adjectives ending in -parous) + -ity.

More
• pair from Middle English:

Pair comes from Latin paria ‘equal things’, formed from par ‘equal’. Latin par also lies behind compare (Late Middle English) ‘to pair with, bring together’; disparage (Middle English) originally ‘a mis-pairing especially in marriage’, later ‘to discredit’; nonpareil (Late Middle English) ‘not equalled’ (taken directly from the French); par (late 16th century) ‘equal’, a golfing term from L19th; parity [L16] ‘equalness’; peer (Middle English) ‘equal’; and umpire (Middle English) originally noumpere, from the same source as nonpareil, because an umpire is above all the players. A noumpere was later re-interpreted as ‘an umpire’ and the initial ‘n’ was lost.

## For editors and proofreaders

Syllabification: par·i·ty

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