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x-unit

[ eks-yoo-nit ]
/ ˈɛksˌyu nɪt /
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noun
a unit formerly used to express the wavelength of x-rays and gamma rays, equal to approximately 10−11 centimeters. Abbreviations: Xu, XU
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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British Dictionary definitions for x-unit

x-unit

noun
a unit of length equal to 0.100 202 × 10 –12 metre, for expressing the wavelengths of X-rays and gamma rays
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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