We found 28 dictionaries that define the word light pen:

General (17 matching dictionaries)

1. light pen: Longman Dictionary of Contemporary English
2. light pen: Merriam-Webster
3. light pen: Oxford Learner's Dictionaries
4. light pen: American Heritage Dictionary of the English Language
5. light pen: Collins English Dictionary
6. light pen: Vocabulary.com
7. light-pen: Cambridge Advanced Learner's Dictionary
8. light pen: Wiktionary
9. light pen: Infoplease Dictionary
10. light pen: Dictionary.com
11. Light pen: Wikipedia, the Free Encyclopedia
12. light pen: Rhymezone
13. light pen: FreeDictionary.org
14. light pen: Mnemonic Dictionary
15. light pen: TheFreeDictionary.com

Art (2 matching dictionaries)

16. English-Chinese Dictionary of Graphic Communications (Big 5) (No longer online)
17. ODLIS: Online Dictionary of Library and Information Science (No longer online)

Business (1 matching dictionary)

18. light pen: Legal dictionary

Computing (5 matching dictionaries)

19. light pen: Free On-line Dictionary of Computing
20. Light pen, light pen: CCI Computer
21. Webopedia (No longer online)
22. I T Glossary (No longer online)
23. light pen: Encyclopedia

Medicine (2 matching dictionaries)

24. online medical dictionary (No longer online)
25. light pen: Medical dictionary

Tech (1 matching dictionary)

26. Glossary of video terms (No longer online)

(Note: See light_pens as well.)

Definitions from Wiktionary (light pen) ▸ noun:  (computer hardware) A pen-like device allowing a computer user to interact with the screen display. Similar: electronic stylus, pentop, pointing device, presenter, touchpad, device, pocket computer, lap-top computer, pager, touch screen, more... Opposite: dark pen, black pen, opaque pen Adjectives: key, sticky, multibox, on-screen, dual boot, slate, desktop, transportable, scrolly, crossover, multitouch ▸ Words similar to light pen ▸ Usage examples for light pen ▸ Idioms related to light pen ▸ Wikipedia articles (New!) ▸ Words that often appear near light pen ▸ Rhymes of light pen ▸ Invented words related to light pen