parity ˈper-ə-tē , ˈpa-rə- noun
1. functional equality
2. (physics) the state of being 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
3. (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
4. (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
5. (obstetrics) the number of liveborn children a woman has delivered
The word parity has appeared in 118 articles on NYTimes.com in the past year, including on Sept. 16 in “Japan’s New Leader Picks His Team: Familiar Men, and Fewer Women” by Motoko Rich:
TOKYO — Japan’s governing party resisted any urge to pick a magnetic crowd-pleaser when it anointed Yoshihide Suga as its leader this week. As Parliament officially elected him prime minister on Wednesday, he repaid its support.
…. On the issue of women in the cabinet, Mr. Suga’s failure to increase their numbers, some analysts said, reflected the fact that there are simply not enough women in the Liberal Democratic Party overall. Ten percent of party lawmakers are women, and Mr. Suga gave ministerial roles to two of them: Yoko Kamikawa, the justice minister, and Seiko Hashimoto, the minister for the Olympics.
But others say that Mr. Suga and the Liberal Democrats are simply not committed to gender equality, even after the passage of a law two years ago promoting gender parity in politics.