(Main list of acronyms and initialisms)

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XA

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XB

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• XBML - (p) eXtensible Battle Management Language

XC

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• XCBL - (i) XML Common Business Library

XD

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XE

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• Xe - (s) Xenon

XF

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XG

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XH

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• XHTML - (p) eXtensible Hypertext Markup Language
• XHR - eXtra high resolution
• XHR - XMLHTTPRequest

XI

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XJ

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XK

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XL

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• XL - (p) eXtra Large

XM

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• XML - (p) eXtensible Markup Language
• XMSF - (p) eXtensible Modelling and Simulation Framework

XN

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XO

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• XO - (i) Χριστιανός Ορθόδοξος (Xristianos Orthodoksos, Greek for "Eastern Orthodoxy") - (p) eXecutive Officer - eXtra Old (brandy grade)

XP

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• XP - (p) eXperience Point (role-playing games)

XQ

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XR

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• XRML - (p) eXtensible Rights Markup Language

XS

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• XSL - (p) eXtensible Style Language

XT

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XU

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XV

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XW

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XX

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xxx-pronogrphy

XY

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XZ

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Lists of abbreviations | Acronyms