crystal lattice

n.
A geometric arrangement of the points in space at which the atoms, molecules, or ions of a crystal occur. Also called space lattice.

The regular pattern of atoms, ions, or molecules in a crystalline substance. A crystal lattice can be regarded as produced by repeated translations of a unit cell of the lattice. See also crystal system.

External Links:

• http://cst-www.nrl.navy.mil/lattice/index.html -- An interactive version of the structures of a range of crystals from a US Navy website
• http://www.geo.ucalgary.ca/~tmenard/crystal/crystal.html -- crystal models from the University of Calgary

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For more information on crystal lattice, visit Britannica.com.

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The noun has one meaning:

Meaning #1: a 3-dimensional geometric arrangement of the atoms or molecules or ions composing a crystal
  Synonyms: space lattice, Bravais lattice

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