English abbreviations from xwn to xzx
- XWN (eXtended WordNet)
- XWO (Xtreme World Order)
- XWR (Xtreme Wrestling Revolution)
- XWS (X Window System)
- XWT (XML Windowing Toolkit)
- XWW (Xtreme World Wrestling)
- XWZ (Xbox War Zone)
- XX (Twenty (in Roman numerals))
- XXE (XML External Entities)
- XXL (Xtraordinary Xpression Of Life)
- XXX (Hardcore pornography (film rating))
- XYA (IATA code for Yandina Airport)
- XYC (XY Calliper Log (Halliburton))
- XYD (Xylidine)
- XYE (Ye Airport)
- Xyl (Xylobium)
- XYP (X- Y Plotter)
- XYR (X- Y Recorder)
- X YR DEV (10 Year Device)
- XYZ (Xtra Years Of Zest)
- XZ (The X-Treme Zone)
- XZA (IATA code for Zabré Airport)
- XZB (Xtreme Zoid Battles)
- XZN (Triple square screw driver)
- XZW (Xtreme Zen Wrestling)
- XZX (Sinclair ZX UN*X emulator)