parity

noun

1. (uncountable)Equality; comparability of strength or intensity.

   “Altogether, Microsoft claims a 99% feature parity between 32-bit and 64-bit editions.”

   “For all their frailty at the back, Arsenal possessed genuine menace in attack and they carved through Chelsea with ease to restore parity nine minutes before half-time. Aaron Ramsey's pass was perfection and Gervinho took the unselfish option to set up Van Persie for a tap-in.”

2. (countable)Senses related to classification into two sets.

   “Parity is always preserved in such operations.”

3. (countable)Senses related to classification into two sets.

   “The particles' parities can switch at random.”

4. (countable, uncountable)Senses related to classification into two sets.
5. (countable)Senses related to classification into two sets.
6. (countable)In reversi, the last move within a given sector of the board.
7. (countable, uncountable)Resemblance; analogy.
8. (countable)The number of delivered pregnancies reaching viable gestational age, usually between 20-28 weeks.
9. (countable)The number of times a sow has farrowed.