Word.ws English Dictionary

X11

X11 proper noun: a windowing system for bitmap displays, common on Unix-like operating systems.

Proper noun

X11

  1. (Unix) A windowing system for bitmap displays, common on Unix-like operating systems.
    Synonyms:
    X

Synonyms of X11

Origin of X11

So called because it is the 11th version of the X Window System.

Questions about X11

What does X11 mean?
X11 means a windowing system for bitmap displays, common on Unix-like operating systems.
What part of speech is X11?
X11 is a proper noun.

Words near X11 in the dictionary

  1. X-Y recorders
  2. X.
  3. x.m.
  4. X/Windows
  5. X0 system
  6. X11
  7. X17 particle
  8. X17 particles
  9. x64
  10. x86
  11. x86-16

Source and license

Adapted from Wiktionary: X11 (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “X11.” Word.ws, https://word.ws/x11. Based on Wiktionary, CC BY-SA 4.0.