Crystal (disambiguation)
Crystal can refer to several different things:
Physical science - In chemistry and mineralogy, a crystal is a form of matter wherein its molecules are regularly aggregated in a definite internal crystal structure, with the external form of a solid of symmetrically arranged plane faces.
- In physical chemistry, liquid crystal is a turbid liquid with some internal structure like an ordinary crystal, that exhibits double refraction.
Technology - In electronics, a crystal (sometimes abbreviated XTAL) is a piece of quartz crystal used in a crystal oscillator to generate a stable frequency signal, as in a radio or a quartz watch. A different type of crystal in the past has been used as a diode in making a crystal radio receiver.
- Crystal glass is a form of glass with a high degree of transparency that usually consists of a high proportion of lead oxide.
Art - A crystal is a piece of rock-crystal or the like used especially in magic art, such as crystal gazing.
Proper name - Billy Crystal is an American comedian and actor.
- David Crystal is a British linguist and author.
Popular culture - The Crystals was a highly successful American "girl group" of the 1960s, best known for songs like He's a Rebel and Uptown.
- In the fictional Marvel Comics universe, Crystal is a superhero who can manipulate the elements.
- Crystal is a slang term for methamphetamine, a synthetic stimulant drug which induces a strong feeling of euphoria and is highly addictive.
Computer software - Crystal Reports is a commercial computer software product for creating reports about databases.
See also: Krystal
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