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Glossary X +++ 'Xenon', 'X', 'X-ray'
X is a rare letter and is mostly added to brands, when they want to emphasize that this product is either . . .
X-rays refer to a type of electromagnetic radiation with a wavelength shorter than ultraviolet light but longer than gamma rays.
Xenon is a chemical element with the symbol "Xe" and atomic number 54. It is a noble gas that is used in a number of aerospace applications.
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