We found 19 dictionaries that define the word npn:

General (9 matching dictionaries)

1. NPN, NPN: Merriam-Webster
2. NPN: Oxford Learner's Dictionaries
3. NPN: American Heritage Dictionary of the English Language
4. npn: Wordnik
5. NPN: Dictionary.com
6. NPN: Wikipedia, the Free Encyclopedia
7. NPN, npn: Stammtisch Beau Fleuve Acronyms
8. NPN: TheFreeDictionary.com
9. NPN: Wiktionary

Computing (2 matching dictionaries)

10. NPN (New Public Network): Linktionary Networking Glossary
11. NPN: Encyclopedia

Medicine (4 matching dictionaries)

12. NPN: Merriam-Webster Medical Dictionary
13. Dorland's Illustrated Medical Dictionary (No longer online)
14. online medical dictionary (No longer online)
15. NPN: Medical dictionary

Miscellaneous (2 matching dictionaries)

16. NPN: Acronym Finder
17. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

18. NPN: Urban Dictionary

Tech (1 matching dictionary)

19. AUTOMOTIVE TERMS (No longer online)

Definitions from Wiktionary (NPN) ▸ noun:  (electronics) Short for NPN transistor. ▸ noun:  (biology) Initialism of non-protein nitrogen. ▸ noun:  (chemistry) Initialism of N-propyl nitrate. Similar: PnP, UPN, transistor, NPP, bun, parasitic, ruling, vertical, lateral, devices, more... Opposite: pnp Types: transistor, junction transistor, more... Phrases: npn transistor, more... ▸ Words similar to npn ▸ Usage examples for npn ▸ Idioms related to npn ▸ Wikipedia articles (New!) ▸ Popular adjectives describing npn ▸ Words that often appear near npn ▸ Rhymes of npn ▸ Invented words related to npn