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point group
(redirected from Point groups)

    Also found in: Dictionary/thesaurus, Wikipedia 0.04 sec.
point group [′pȯint ‚grüp]
(crystallography)
A group consisting of the symmetry elements of an object having a single fixed point; 32 such groups are possible.


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Cubes, octahedra, and tetrahedra, for instance, are examples of special forms belonging to the cubic point groups, octahedra to point groups 432, m3, and m3m, tetrahedra to 23 and 43m, and cubes to all five.
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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