We found 26 dictionaries that define the word x-axis:

General (19 matching dictionaries)

1. x-axis: Merriam-Webster
2. x-axis: Oxford Learner's Dictionaries
3. x-axis: American Heritage Dictionary of the English Language
4. x-axis, x-axis: Collins English Dictionary
5. x-axis: Vocabulary.com
6. X-axis, x-axis: Wordnik
7. x-axis: Cambridge Advanced Learner's Dictionary
8. x-axis: Wiktionary
9. x-axis: Webster's New World College Dictionary, 4th Ed.
10. x-axis: The Wordsmyth English Dictionary-Thesaurus
11. x-axis: Infoplease Dictionary
12. x-axis: Dictionary.com
13. X-axis: Wikipedia, the Free Encyclopedia
14. x-axis: Rhymezone
15. x-axis: FreeDictionary.org
16. x-axis: Mnemonic Dictionary
17. x-axis: TheFreeDictionary.com

Computing (2 matching dictionaries)

18. x-axis: CCI Computer
19. x-axis: Encyclopedia

Science (2 matching dictionaries)

20. x-Axis: Eric Weisstein's World of Mathematics
21. x-axis: MATH SPOKEN HERE!

Tech (3 matching dictionaries)

22. x-axis: Webster's New World Telecom Dictionary
23. x-axis: Data Acquisition
24. Rane Professional Audio Reference (No longer online)

(Note: See x-axes as well.)

Definitions from WordNet ( ) ▸ noun:  the horizontal axis in a plane coordinate system Similar: y-axis, z-axis, x-direction, axis, ordinate, coordinate axis, real axis, y-direction, ordinate axis, co-ordinate axis, more... Opposite: y-axis, vertical axis, ordinate ▸ Words similar to x-axis ▸ Usage examples for x-axis ▸ Idioms related to x-axis ▸ Wikipedia articles (New!) ▸ Popular adjectives describing x-axis ▸ Words that often appear near x-axis ▸ Rhymes of x-axis ▸ Invented words related to x-axis