List of acronyms: X

This list contains acronyms, initialisms, and pseudo-blends  that begin with the letter X.

For the purposes of this list:

  • acronym = an abbreviation pronounced as if it were a word, e.g., SARS = severe acute respiratory syndrome, pronounced to rhyme with cars
  • initialism = an abbreviation pronounced wholly or partly using the names of its constituent letters, e.g., CD = compact disc, pronounced cee dee
  • pseudo-blend = an abbreviation whose extra or omitted letters mean that it cannot stand as a true acronym, initialism, or portmanteau (a word formed by combining two or more words).
(a) = acronym, e.g.: SARS – (a) severe acute respiratory syndrome
(i) = initialism, e.g.: CD – (i) compact disc
(p) = pseudo-blend, e.g.: UNIFEM – (p) United Nations Development Fund for Women
(s) = symbol (none of the above, representing and pronounced as something else; for example: MHz – megahertz)

Some terms are spoken as either acronym or initialism, e.g., VoIP, pronounced both as voyp and V-O-I-P.

(Main list of acronyms)

XA

  • XAF – (s) BEAC (Banque des états de l'Afrique centrale) Central Africa CFA (Coopération financière en Afrique centrale) franc (ISO 4217 currency code)
  • XAG – (s) Silver Troy ounce (ISO 4217 currency code)
  • XAU – (s) Gold Troy ounce (ISO 4217 currency code)

XB

  • XBA – (s) European Composite Unit (EURCO; Bonds market unit) (ISO 4217 currency code)
  • XBB – (s) European Monetary Unit (E.M.U.; Bonds market unit) (ISO 4217 currency code)
  • XBML – (p) eXtended Business Modelling Language

XC

XD

  • XD – Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.

XE

XF

XG

  • XG – (s) Automobile made by Hyundai
  • XGA – (p) Extended Graphics Array
  • XGE
  • XGG – (p) IATA code for Gorom Gorom Airport
  • XGN – (p) IATA code for Xangongo Airport
  • XGP – (p) Extreme Game Player
  • XGR – (p) IATA code for Kangiqsualujjuag (Georges River) Airport

XH

XI

XJ

  • XJ
    • (s) Automobile made by Jaguar
    • (s) Automobile made by Jeep
  • XJL
    • (s) Amphibian aircraft made by Columbia
    • (s) Automobile made by Jaguar
  • XJS – (s) Automobile made by Jaguar

XK

  • XK
    • (s) Automobile made by Jaguar
    • (s) Automobile made by Jeep
    • (s) Kell blood group precursor
  • XKA – (p) IATA code for Kantchari Airport
  • XKB – (p) X keyboard extension
  • XKE – (s) Automobile made by Jaguar
  • XKH – (p) IATA code for Xieng Khouang Airport
  • XKR – (s) Automobile made by Jaguar
  • XKS – (p) IATA code for Kasabonika Airport
  • XKY – (p) IATA code for Kaya Airport

XL

  • XL
    • (p) eXtra Large
    • (s) Forty (in Roman numerals)

XM

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

XN

XO

  • XO
    • (i) Χριστιανός Ορθόδοξος (Xristianos Orthodoksos, Greek for "Eastern Orthodoxy")
    • (p) eXecutive Officer
    • eXtra Old (brandy grade)
  • XOF – (s) BCÉAO (Banque centrale des états de l'Afrique de l'Ouest) West African CFA (Communauté financière d'Afrique) franc (ISO 4217 currency code)

XP

  • XP – (p) eXperience Point (role-playing games)
  • XPD – (s) Palladium Troy ounce (ISO 4217 currency code)
  • XPF – (s) CFP franc (ISO 4217 currency code)
  • XPT – (s) Platinum Troy ounce (ISO 4217 currency code)

XQ

  • XQJ – (p) XQuery API for Java™
  • XQP – (p) IATA code for Quepos La Managua Airport
  • XQU – (p) IATA code for Qualicum Beach Airport

XR

XS

XT

  • XTMH – eXtreme Technology Multiprocessor Hyperlanguage

XU

  • XUL – (p) XML User Interface Language

XV

XW

  • XWB – (p) (Airbus A350) "Extra Wide Body"
  • XWF – (i) Xcitement Wrestling Federation
  • XWM – (i) X window manager
  • XWN – (p) eXtended WordNet
  • XWS – (i) X Window System

XX

  • XX – (s) Twenty (in Roman numerals)
  • XXX – (s) Hardcore pornography (film rating) – Thirty (in Roman numerals)

XY

  • XYA – (p) IATA code for Yandina Airport
  • Xyl – (s) Xylobium

XZ

  • XZA – (p) IATA code for Zabré Airport
  • XZN – (s) Triple square screw driver
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