What is the meaning of Parity?

Equality; comparability of strength or intensity.

Senses related to classification into two sets.

1. A set with the property of having all of its elements belonging to one of two disjoint subsets, especially a set of integers split in subsets of even and odd elements.

   A set with the property of having all of its elements belonging to one of two disjoint subsets, especially a set of integers split in subsets of even and odd elements.

   The classification of an element of a set with parity into one of the two sets.

   The count of one bits in a value, reduced to even or odd or zero or one.

   Symmetry of interactions under spatial inversion.

   In reversi, the last move within a given sector of the board.

   Resemblance; analogy.

   The number of delivered pregnancies reaching viable gestational age, usually between 20-28 weeks.

   The number of times a sow has farrowed.

   Source: wiktionary.org