We found 32 dictionaries that define the word pseudonym:

General (27 matching dictionaries)

1. pseudonym: Longman Dictionary of Contemporary English
2. pseudonym: Merriam-Webster
3. pseudonym: Oxford Learner's Dictionaries
4. pseudonym: American Heritage Dictionary of the English Language
5. pseudonym: Collins English Dictionary
6. pseudonym: Vocabulary.com
7. Pseudonym, pseudonym: Wordnik
8. pseudonym: Cambridge Advanced Learner's Dictionary
9. pseudonym: Wiktionary
10. pseudonym: Webster's New World College Dictionary, 4th Ed.
11. pseudonym: The Wordsmyth English Dictionary-Thesaurus
12. pseudonym: Infoplease Dictionary
13. Pseudonym, pseudonym: Dictionary.com
14. pseudonym: Online Etymology Dictionary
15. pseudonym: Cambridge Essential American English Dictionary
16. Pseudonym (band), Pseudonym: Wikipedia, the Free Encyclopedia
17. Pseudonym: Online Plain Text English Dictionary
18. pseudonym: Webster's Revised Unabridged, 1913 Edition
19. pseudonym: Rhymezone
20. Pseudonym (nt), pseudonym: AllWords.com Multi-Lingual Dictionary
21. pseudonym: Stammtisch Beau Fleuve Acronyms
22. pseudonym: FreeDictionary.org
23. pseudonym: Mnemonic Dictionary
24. pseudonym: TheFreeDictionary.com
25. pseudonym: Wikimedia Commons US English Pronunciations

Art (1 matching dictionary)

26. Pseudonym: Literary Terms

Business (1 matching dictionary)

27. pseudonym: Legal dictionary

Computing (2 matching dictionaries)

28. Technopedia (No longer online)
29. pseudonym: Encyclopedia

Slang (1 matching dictionary)

30. pseudonym: Urban Dictionary

(Note: See pseudonyms as well.)

Definitions from Wiktionary ( ) ▸ noun:  A fictitious name (more literally, a false name), as those used by writers and movie stars. Similar: nom de guerre, anonym, pseudonymy, pen name, pseudonymity, pseud, pseudo, pseudandry, demonym, pseudograph, more... Opposite: real name, given name, birth name Types: pen name, nom de plume, alias, more... Phrases: pseudonym for charles lamb, geisel pseudonym, literary pseudonym, letters that indicate a pseudonym, more... Adjectives: male, same, literary, new, joint, own, masculine, collective, transparent, famous, female Colors:     midnight blue,     charcoal,     slate gray,     burgundy,     olive green, more... ▸ Word origin ▸ Words similar to pseudonym ▸ Usage examples for pseudonym ▸ Idioms related to pseudonym ▸ Wikipedia articles (New!) ▸ Popular adjectives describing pseudonym ▸ Words that often appear near pseudonym ▸ Rhymes of pseudonym ▸ Invented words related to pseudonym