We found 26 dictionaries that define the word user interface:

General (13 matching dictionaries)

1. user interface: Longman Dictionary of Contemporary English
2. user interface: Merriam-Webster
3. user interface: Oxford Learner's Dictionaries
4. user interface: Collins English Dictionary
5. user interface: Vocabulary.com
6. User-Interface, user-interface: Wordnik
7. user interface: Wiktionary
8. user interface: Dictionary.com
9. User Interface, User-interface, User interface: Wikipedia, the Free Encyclopedia
10. user interface: Rhymezone
11. user interface: FreeDictionary.org
12. user interface: Mnemonic Dictionary
13. user interface: TheFreeDictionary.com

Business (3 matching dictionaries)

14. MoneyGlossary.com (No longer online)
15. User Interface: E-Commerce and Marketing Dictionary of Terms
16. BusinessDictionary.com (No longer online)

Computing (6 matching dictionaries)

17. user interface: Free On-line Dictionary of Computing
18. user interface: CCI Computer
19. User Interface, User Interface: Game Dictionary
20. User Interface: Tech Terms Computer Dictionary
21. Webopedia (No longer online)
22. User-interface, user interface: Encyclopedia

Medicine (1 matching dictionary)

23. online medical dictionary (No longer online)

Science (1 matching dictionary)

24. Agricultural Thesaurus and Glossary (No longer online)

Sports (1 matching dictionary)

25. 2060 Shadow-Slang (No longer online)

Tech (1 matching dictionary)

26. Sweetwater Music (No longer online)

(Note: See user_interfaces as well.)

Definitions from Wiktionary (user interface) ▸ noun:  (computing) The visual part of a software application that a user sees and interacts with. Similar: interface, user control, graphical user interface, front end, view, desktop environment, desktop, natural user interface, widget, window, more... Opposite: backend, server-side, programming Phrases: graphical user interface, macintosh user interface, Tangible user interface, textual user interface, user network interface, more... Adjectives: twisty, home, alt, selectable, clickable, tabbed, collapsible, modeless, key, marquee, pretravel ▸ Words similar to user interface ▸ Usage examples for user interface ▸ Idioms related to user interface ▸ Wikipedia articles (New!) ▸ Words that often appear near user interface ▸ Rhymes of user interface ▸ Invented words related to user interface