Editing Unit cell (section)

==Three dimensions==
[[File:Parallelepiped 2013-11-29.svg|thumb|A [[parallelepiped]] is a general primitive cell for 3-dimensional space.]]
For any 3-dimensional lattice, the conventional unit cells are [[parallelepiped]]s, which in special cases may have orthogonal angles, or equal lengths, or both. Seven of the fourteen three-dimensional [[Bravais lattice]]s are represented using conventional primitive cells, as shown below. 

{| class=wikitable
!Conventional primitive cell
|[[File:Triclinic.svg|100px]]
|[[File:Monoclinic.svg|80px]]
|[[File:Orthorhombic.svg|80px]]
|[[File:Tetragonal.svg|80px]]
|[[File:Rhombohedral.svg|100px]]
|[[File:Cubic.svg|100px]]
|[[File:Hexagonal latticeFRONT.svg|80px|Hexagonal]]
|-
! Shape name
|[[Parallelepiped]]
|Oblique rectangular [[Prism (geometry)|prism]]
|Rectangular [[cuboid]]
|Square [[cuboid]]
|[[Trigonal trapezohedron]]
|[[Cube]]
|Right rhombic [[Prism (geometry)|prism]]
|-
! Bravais lattice
|Primitive [[Triclinic crystal system|Triclinic]]
|Primitive [[monoclinic crystal system|Monoclinic]]
|Primitive [[orthorhombic crystal system|Orthorhombic]]
|Primitive [[Tetragonal crystal system|Tetragonal]]
|Primitive [[Rhombohedral lattice system|Rhombohedral]]
|Primitive [[Cubic crystal system|Cubic]]
|Primitive [[Hexagonal crystal system|Hexagonal]]
|}

The other seven Bravais lattices (known as the centered lattices) also have primitive cells in the shape of a parallelepiped, but in order to allow easy discrimination on the basis of symmetry, they are represented by conventional cells which contain more than one lattice point.

{| class=wikitable
! Primitive cell
|[[File:Clinorhombic prism.svg|100px]]
|[[File:Rhombic prism.svg|80px]]
|
|
|
|
|
|-
! Shape name
|Oblique rhombic [[Prism (geometry)|prism]]
|Right rhombic [[Prism (geometry)|prism]]
|
|
|
|
|
|-
! Conventional cell
|[[File:Base-centered monoclinic.svg|80px]]
|[[File:Orthorhombic-base-centered.svg|80px]]
|[[File:Orthorhombic-body-centered.svg|80px]]
|[[File:Orthorhombic-face-centered.svg|80px]]
|[[File:Tetragonal-body-centered.svg|80px]]
|[[File:Cubic-body-centered.svg|80px]]
|[[File:Cubic-face-centered.svg|80px]]
|-
! Bravais lattice
|Base-centered [[Monoclinic crystal system|Monoclinic]]
|Base-centered [[Orthorhombic crystal system|Orthorhombic]]
|Body-centered [[Orthorhombic crystal system|Orthorhombic]]
|Face-centered [[Orthorhombic crystal system|Orthorhombic]]
|Body-centered [[Tetragonal crystal system|Tetragonal]]
|Body-centered [[Cubic crystal system|Cubic]]
|Face-centered [[Cubic crystal system|Cubic]]
|}