We found 24 dictionaries that define the word nixie:

General (16 matching dictionaries)

1. nixie: Merriam-Webster
2. nixie: Oxford Learner's Dictionaries
3. nixie: American Heritage Dictionary of the English Language
4. nixie: Collins English Dictionary
5. Nixie, nixie: Wordnik
6. nixie: Wiktionary
7. nixie: Webster's New World College Dictionary, 4th Ed.
8. nixie: Infoplease Dictionary
9. Nixie, nixie: Dictionary.com
10. nixie: Online Etymology Dictionary
11. Nixie (drone), Nixie (postal), Nixie: Wikipedia, the Free Encyclopedia
12. Nixie: Online Plain Text English Dictionary
13. nixie: Webster's Revised Unabridged, 1913 Edition
14. Nixie: AllWords.com Multi-Lingual Dictionary
15. nixie: FreeDictionary.org
16. nixie: TheFreeDictionary.com

Art (1 matching dictionary)

17. Glossary of Stamp Collecting Terms (No longer online)

Computing (1 matching dictionary)

18. nixie: Encyclopedia

Medicine (1 matching dictionary)

19. nixie: Medical dictionary

Miscellaneous (3 matching dictionaries)

20. baby names list (No longer online)
21. NIXIE: Acronym Finder
22. nixie: Wordcraft Dictionary

Slang (2 matching dictionaries)

23. nixie, nixie: Green’s Dictionary of Slang
24. Nixie, Nixie, nixie: Urban Dictionary

(Note: See nixies as well.)

Definitions from Wiktionary (nixie) ▸ noun:  A female nix, a water-spirit. ▸ noun:  A piece of mail returned as undeliverable. Similar: nixy, nixe, nymphette, vixen, pixie, pixy, sea-girl, sylphide, nymph, ninjette, more... Phrases: Nixie tube, nixie tubes, nixie clerk, AN/SLQ-25 Nixie, The Nixie of the Mill-Pond, more... Adjectives: poor, disobedient, cunning, white, old ▸ Word origin ▸ Words similar to nixie ▸ Usage examples for nixie ▸ Idioms related to nixie ▸ Wikipedia articles (New!) ▸ Popular adjectives describing nixie ▸ Words that often appear near nixie ▸ Rhymes of nixie ▸ Invented words related to nixie