We found 37 dictionaries that define the word treason:

General (25 matching dictionaries)

1. treason: Merriam-Webster.com
2. treason: Oxford Learner's Dictionaries
3. treason: Collins English Dictionary
4. treason: Vocabulary.com
5. Treason, treason: Wordnik
6. treason: Cambridge Advanced Learner's Dictionary
7. treason: Wiktionary
8. treason: Webster's New World College Dictionary, 4th Ed.
9. treason: The Wordsmyth English Dictionary-Thesaurus
10. treason: Infoplease Dictionary
11. treason: Dictionary.com
12. treason: Online Etymology Dictionary
13. treason: Cambridge Essential American English Dictionary
14. Treason (album), Treason (disambiguation), Treason (legal thriller), Treason: Wikipedia, the Free Encyclopedia
15. Treason: Online Plain Text English Dictionary
16. treason: Webster's Revised Unabridged, 1913 Edition
17. treason: Rhymezone
18. treason: AllWords.com Multi-Lingual Dictionary
19. treason: Webster's 1828 Dictionary
20. treason: Free Dictionary
21. treason: Mnemonic Dictionary
22. treason: LookWAYup Translating Dictionary/Thesaurus
23. treason: Dictionary/thesaurus

Business (8 matching dictionaries)

24. treason: Webster's New World Law Dictionary
25. Duhaime's Canadian law dictionary (No longer online)
26. treason: Law.com Dictionary
27. Everybody's Legal Dictionary (No longer online)
28. THE 'LECTRIC LAW LIBRARY'S REFERENCE ROOM (No longer online)
29. Glossary of Legal Terms (No longer online)
30. Bouvier's Law Dictionary 1856 Edition (No longer online)
31. treason: Legal dictionary

Computing (1 matching dictionary)

32. treason: Encyclopedia

Miscellaneous (1 matching dictionary)

33. treason: Political

Slang (1 matching dictionary)

34. treason: Urban Dictionary

Tech (1 matching dictionary)

35. DOD Dictionary of Military Terms (No longer online)

(Note: See treasons as well.)

Definitions from Wiktionary ( ) ▸ noun:  The crime of betraying one’s own country. ▸ noun:  An act of treachery, betrayal of trust or confidence. Similar: high treason, treachery, lese majesty, perfidy, betrayal, traitorousness, subversiveness, traitorism, trahison, traitordom, more... Opposite: loyalty Types: high treason, petty treason, more... Phrases: high treason, petty treason, Gunpowder Treason, constructive treason, petit treason, more... Adjectives: high, constructive, petty, domestic, petit, moral, open, foul, greatest, bloody, double Colors:     crimson,     scarlet,     blood red,     burgundy,     maroon, more... ▸ Word origin ▸ Words similar to treason ▸ Usage examples for treason ▸ Idioms related to treason ▸ Wikipedia articles (New!) ▸ Popular adjectives describing treason ▸ Words that often appear near treason ▸ Rhymes of treason ▸ Invented words related to treason