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symmetry element

noun, Crystallography
any of four points, lines, or planes of a crystal: a center of symmetry, a reflection plane, a rotation axis, or a rotation-inversion axis. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for symmetry element
  • The action of each symmetry element of the point group on the vector to the general position generates an equivalent position.

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