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crystal class
(redirected from Crystallographic point group)

    Also found in: Wikipedia 0.01 sec.
crystal class [′krist·əl ′klas]
(crystallography)
One of 32 categories of crystals according to the inversions, rotations about an axis, reflections, and combinations of these which leaves the crystal invariant. Also known as symmetry class.


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Because they could be considered as small incommensurate distortions of periodic structures with a crystallographic point group, they could be fit into the schemes of crystallography.
Quasicrystals by Cahn, John W. / Journal of Research of the National Institute of Standards and Technology
Reduction of Crystallographic Point Groups to Subgroups by Homogeneous Stress, J.
Towards near perfect crystals with only well-characterized ... by Peiser, H. Steffen / Journal of Research of the National Institute of Standards and Technology
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