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unit cell

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unitcell (pluralunit cells)

1. (crystallography) The smallestrepeating structure (parallelepiped) ofatoms within acrystal, from which the structure of the complete crystal can be inferred.
   • 1998, Georgina Ferry,Dorothy Hodgkin: A Life:

     The first task for a crystallographer is to establish the shape of theunit cell.

• conventional cell
• primitive cell

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