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We found 62 dictionaries with English definitions that include the word placebo:
Click on the first link on a line below to go directly to a page where "placebo" is defined.

General (32 matching dictionaries)

1. placebo: Merriam-Webster.com [home, info]
2. placebo: Oxford Dictionaries [home, info]
3. placebo: American Heritage Dictionary of the English Language [home, info]
4. placebo: Collins English Dictionary [home, info]
5. placebo: Vocabulary.com [home, info]
6. placebo: Macmillan Dictionary [home, info]
7. Placebo, placebo: Wordnik [home, info]
8. placebo: Cambridge Advanced Learner's Dictionary [home, info]
9. placebo: Wiktionary [home, info]
10. placebo: Webster's New World College Dictionary, 4th Ed. [home, info]
11. placebo: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. placebo: Infoplease Dictionary [home, info]
13. placebo: Hutchinson's Dictionary of Difficult Words [home, info]
14. placebo: Free Dictionary [home, info]
15. placebo: Hutchinson Dictionaries [home, info]
16. placebo: Mnemonic Dictionary [home, info]
17. placebo: WordNet 1.7 Vocabulary Helper [home, info]
18. placebo: LookWAYup Translating Dictionary/Thesaurus [home, info]
19. placebo: Dictionary/thesaurus [home, info]
20. Placebo: Dictionary of Phrase and Fable (1898) [home, info]
21. placebo: Dictionary.com [home, info]
22. placebo: Online Etymology Dictionary [home, info]
23. placebo: UltraLingua English Dictionary [home, info]
24. placebo: Cambridge Dictionary of American English [home, info]
25. Placebo (album), Placebo (at funeral), Placebo (band), Placebo (disambiguation), Placebo (medicine), Placebo: Wikipedia, the Free Encyclopedia [home, info]
26. Placebo: Online Plain Text English Dictionary [home, info]
27. placebo: Webster's Revised Unabridged, 1913 Edition [home, info]
28. placebo: Rhymezone [home, info]
29. Placebo: AllWords.com Multi-Lingual Dictionary [home, info]
30. Placebo: E Cobham Brewer, The Reader's Handbook [home, info]

Computing (1 matching dictionary)

31. Placebo (medicine), Placebo (origins of technical term), placebo: Encyclopedia [home, info]

Medicine (25 matching dictionaries)

32. placebo: online medical dictionary [home, info]
33. Placebo: HIV/AIDS Glossary [home, info]
34. Placebo: Cancer Glossary [home, info]
35. Placebo: Glossary of Terms Used in Medicinal Chemistry [home, info]
36. PLACEBO: Lay Terms for Consent Forms [home, info]
37. Placebo: Health and Wellness Dictionary [home, info]
38. Placebo: Hepatitis C Information Central [home, info]
39. placebo: Prostate Cancer Interactive Glossary [home, info]
40. Placebo: Allergy Glossary [home, info]
41. Placebo: GI Disorders [home, info]
42. Placebo: Breast Cancer Glossary of Medical Terms [home, info]
43. Placebo: AIDS Medical Glossary and Drug Chart [home, info]
44. placebo: Dictionary of Cancer Terms [home, info]
45. Placebo: National Immunization Program Glossary [home, info]
46. placebo: Parents' Common Sense Encyclopedia [home, info]
47. placebo: Glossary of HIV/AIDS Related Terms [home, info]
48. Placebo (medicine), Placebo (origins of technical term), placebo: Medical dictionary [home, info]
49. placebo: Vitamin Glossary [home, info]
50. Placebo: WeMove Glossary of Terms [home, info]
51. Placebo: Drug Medical Dictionary [home, info]
52. placebo: Hyperdictionary [home, info]
53. Placebo: MedTerms.com Medical Dictionary [home, info]
54. Placebo: AIDSinfo Glossary [home, info]
55. placebo: Natural Health glossary [home, info]
56. placebo: Breast Cancer Talking Dictionary [home, info]

Miscellaneous (2 matching dictionaries)

57. Placebo: Glossary of Terms in Parapsychology [home, info]
58. placebo: A Word A Day [home, info]

Science (2 matching dictionaries)

59. Placebo: Medicinal Chemistry [home, info]
60. Placebo: Statistics [home, info]

(Note: See placebos for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (placebo) ▸ noun:  (Roman Catholic Church) vespers of the office for the dead ▸ noun:  an innocuous or inert medication; given as a pacifier or to the control group in experiments on the efficacy of a drug ▸ Also see placebos ▸ Word origin ▸ Words similar to placebo ▸ Usage examples for placebo ▸ Popular adjectives describing placebo ▸ Words that often appear near placebo ▸ Rhymes of placebo ▸ Invented words related to placebo