space-reflection symmetry space-reflection symmetry /speɪs rɪˈflɛkʃən ˈsɪmətri/

noun

1. (physics) parity is 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  ( conservation of parity , mirror symmetry , parity , space-reflection symmetry )
   (physics) parity is 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