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We found 48 dictionaries with English definitions that include the word delusion:
Click on the first link on a line below to go directly to a page where "delusion" is defined.

General (30 matching dictionaries)

1. delusion: Merriam-Webster.com [home, info]
2. delusion: Oxford Dictionaries [home, info]
3. delusion: American Heritage Dictionary of the English Language [home, info]
4. delusion: Collins English Dictionary [home, info]
5. delusion: Vocabulary.com [home, info]
6. delusion: Macmillan Dictionary [home, info]
7. Delusion, delusion: Wordnik [home, info]
8. delusion: Cambridge Advanced Learner's Dictionary [home, info]
9. delusion: Wiktionary [home, info]
10. delusion: Webster's New World College Dictionary, 4th Ed. [home, info]
11. delusion: V2 Vocabulary Building Dictionary [home, info]
12. delusion: The Wordsmyth English Dictionary-Thesaurus [home, info]
13. delusion: Infoplease Dictionary [home, info]
14. delusion: Dictionary.com [home, info]
15. delusion: Online Etymology Dictionary [home, info]
16. delusion: UltraLingua English Dictionary [home, info]
17. delusion: Cambridge Dictionary of American English [home, info]
18. Delusion (disambiguation), Delusion: Wikipedia, the Free Encyclopedia [home, info]
19. Delusion: Online Plain Text English Dictionary [home, info]
20. delusion: Webster's Revised Unabridged, 1913 Edition [home, info]
21. delusion: Rhymezone [home, info]
22. delusion: AllWords.com Multi-Lingual Dictionary [home, info]
23. delusion: Webster's 1828 Dictionary [home, info]
24. delusion: Free Dictionary [home, info]
25. delusion: Mnemonic Dictionary [home, info]
26. delusion: WordNet 1.7 Vocabulary Helper [home, info]
27. delusion: LookWAYup Translating Dictionary/Thesaurus [home, info]
28. delusion: Dictionary/thesaurus [home, info]

Business (3 matching dictionaries)

29. Delusion: Duhaime's Canadian law dictionary [home, info]
30. DELUSION: Bouvier's Law Dictionary 1856 Edition [home, info]
31. delusion: Legal dictionary [home, info]

Computing (1 matching dictionary)

32. delusion: Encyclopedia [home, info]

Medicine (7 matching dictionaries)

33. Delusion: MedTerms.com Medical Dictionary [home, info]
34. Delusion: MedFriendly Glossary [home, info]
35. delusion: online medical dictionary [home, info]
36. delusion: Terms in the field of Psychiatry and Neurology [home, info]
37. delusion: Medical dictionary [home, info]
38. Delusion: WeMove Glossary of Terms [home, info]
39. Delusion: Drug Medical Dictionary [home, info]

Miscellaneous (4 matching dictionaries)

40. delusion: Sound-Alike Words [home, info]
41. delusion: The Skeptic's Dictionary [home, info]
42. delusion: Idioms [home, info]
43. delusion: Stanford Encyclopedia of Philosophy [home, info]

Religion (2 matching dictionaries)

44. Delusion (Ignorance): Buddhism Glossary [home, info]
45. delusion: Scientology® and Dianetics® [home, info]

Slang (1 matching dictionary)

46. delusion: Urban Dictionary [home, info]

(Note: See delusions for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (delusion) ▸ noun:  the act of deluding; deception by creating illusory ideas ▸ noun:  a mistaken or unfounded opinion or idea ("He has delusions of competence") ▸ noun:  (psychology) an erroneous belief that is held in the face of evidence to the contrary ▸ Also see delusions ▸ Word origin ▸ Words similar to delusion ▸ Usage examples for delusion ▸ Popular adjectives describing delusion ▸ Words that often appear near delusion ▸ Rhymes of delusion ▸ Invented words related to delusion