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We found 47 dictionaries with English definitions that include the word insomnia:
Click on the first link on a line below to go directly to a page where "insomnia" is defined.

General (29 matching dictionaries)

1. insomnia: Merriam-Webster.com [home, info]
2. insomnia: Oxford Learner's Dictionaries [home, info]
3. insomnia: American Heritage Dictionary of the English Language [home, info]
4. insomnia: Collins English Dictionary [home, info]
5. insomnia: Vocabulary.com [home, info]
6. insomnia: Macmillan Dictionary [home, info]
7. Insomnia, insomnia: Wordnik [home, info]
8. insomnia: Cambridge Advanced Learner's Dictionary [home, info]
9. insomnia: Wiktionary [home, info]
10. insomnia: Webster's New World College Dictionary, 4th Ed. [home, info]
11. insomnia: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. insomnia: Infoplease Dictionary [home, info]
13. insomnia: Dictionary.com [home, info]
14. insomnia: Online Etymology Dictionary [home, info]
15. insomnia: UltraLingua English Dictionary [home, info]
16. insomnia: Cambridge Dictionary of American English [home, info]
17. Insomnia (Craig David song), Insomnia (Daya song), Insomnia (Erick Sermon album), Insomnia (Faithless song), Insomnia (Hed PE album), Insomnia (The Hiatus EP), Insomnia (album), Insomnia (band), Insomnia (composition), Insomnia (disambiguation), Insomnia (film), Insomnia (novel), Insomnia (single), Insomnia (song), Insomnia (soundtrack), Insomnia: Wikipedia, the Free Encyclopedia [home, info]
18. Insomnia: Online Plain Text English Dictionary [home, info]
19. insomnia: Webster's Revised Unabridged, 1913 Edition [home, info]
20. insomnia: Rhymezone [home, info]
21. insomnia: AllWords.com Multi-Lingual Dictionary [home, info]
22. insomnia: Free Dictionary [home, info]
23. insomnia: Mnemonic Dictionary [home, info]
24. insomnia: WordNet 1.7 Vocabulary Helper [home, info]
25. insomnia: LookWAYup Translating Dictionary/Thesaurus [home, info]
26. insomnia: Dictionary/thesaurus [home, info]
27. insomnia: Wikimedia Commons US English Pronunciations [home, info]

Business (1 matching dictionary)

28. insomnia: Financial dictionary [home, info]

Computing (1 matching dictionary)

29. insomnia: Encyclopedia [home, info]

Medicine (16 matching dictionaries)

30. Insomnia: MedTerms.com Medical Dictionary [home, info]
31. insomnia: Breast Cancer Talking Dictionary [home, info]
32. insomnia: Chronic Fatigue Syndrome Glossary [home, info]
33. Insomnia: Merck Manuals [home, info]
34. insomnia: Chronic Fatigue Syndrome [home, info]
35. insomnia: online medical dictionary [home, info]
36. insomnia: Dictionary of Cancer Terms [home, info]
37. insomnia: Terms in the field of Psychiatry and Neurology [home, info]
38. insomnia: Glossary of HIV/AIDS Related Terms [home, info]
39. Insomnia: Sleep Terms [home, info]
40. insomnia: Medical dictionary [home, info]
41. Insomnia: Rudy's List of Archaic Medical Terms [home, info]
42. Insomnia: University of Maryland Glossary of Medical Terms [home, info]
43. Insomnia: WeMove Glossary of Terms [home, info]
44. Insomnia: Drug Medical Dictionary [home, info]
45. insomnia: Hyperdictionary [home, info]

(Note: See insomnias for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (insomnia) ▸ noun:  an inability to sleep; chronic sleeplessness ▸ Also see insomnias ▸ Word origin ▸ Words similar to insomnia ▸ Usage examples for insomnia ▸ Idioms related to insomnia (New!) ▸ Popular adjectives describing insomnia ▸ Words that often appear near insomnia ▸ Rhymes of insomnia ▸ Invented words related to insomnia