Crystal system

Crystal system

A Crystal system is a method of classifying crystalline substances on the basis of their unit cell. There are seven unique crystal systems. The crystal system of a compound can be determined using X-ray crystallography.

Pronunciation

• /ˈkrɪstəl ˈsɪstəm/

Etymology

The term "crystal system" comes from the Greek word "krystallos" meaning "ice" and the Latin word "systema" meaning "an organized whole".

Related terms

• Unit cell: The smallest repeating unit of a crystal structure.
• Lattice (group): A regular arrangement of points in space at which the points of a crystal lattice or a Fourier series meet.
• Symmetry in crystallography: The symmetry properties of crystals.
• Bravais lattice: A set of points constructed by translating a single point in discrete steps by a set of basis vectors.
• Crystal structure: The order in which atoms, ions, or molecules are arranged in a crystal.
• Crystallography: The science of studying crystals and their structure.

External links

• Medical encyclopedia article on Crystal system
• Wikipedia's article - Crystal system

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