An Etymological Dictionary of Astronomy and Astrophysics

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parity symmetry
  همامونی ِ همالی  
hamâmuni-ye hamâli
Fr.: symétrie de parité  

The invariance of physical laws under a transformation that changes the sign of the space coordinates. Parity symmetry is sometimes called mirror symmetry. It is known that the parity symmetry is violated in some weak interactions, while it is well preserved in all other three interactions (gravitational, electromagnetic, strong). Same as → P-symmetry and → parity conservation.

See also: → parity; → symmetry.