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We found 79 dictionaries with English definitions that include the word protein:
Click on the first link on a line below to go directly to a page where "protein" is defined.

General (32 matching dictionaries)

1. protein: Merriam-Webster.com [home, info]
2. protein: Oxford Dictionaries [home, info]
3. protein: American Heritage Dictionary of the English Language [home, info]
4. protein: Collins English Dictionary [home, info]
5. protein: Vocabulary.com [home, info]
6. protein: Macmillan Dictionary [home, info]
7. Protein, protein: Wordnik [home, info]
8. protein: Cambridge Advanced Learner's Dictionary [home, info]
9. Protein: InfoVisual Visual Dictionary [home, info]
10. protein: Wiktionary [home, info]
11. protein: Webster's New World College Dictionary, 4th Ed. [home, info]
12. protein: The Wordsmyth English Dictionary-Thesaurus [home, info]
13. protein: Infoplease Dictionary [home, info]
14. protein: Dictionary.com [home, info]
15. protein: Online Etymology Dictionary [home, info]
16. protein: UltraLingua English Dictionary [home, info]
17. protein: Cambridge Dictionary of American English [home, info]
18. Protein (band), Protein (biochemistry), Protein (disambiguation), Protein (nutrient), Protein (nutrition), Protein: Wikipedia, the Free Encyclopedia [home, info]
19. Protein: Online Plain Text English Dictionary [home, info]
20. protein: Webster's Revised Unabridged, 1913 Edition [home, info]
21. protein: Rhymezone [home, info]
22. Protein (nt), protein: AllWords.com Multi-Lingual Dictionary [home, info]
23. protein: Stammtisch Beau Fleuve Acronyms [home, info]
24. protein: Hutchinson's Dictionary of Difficult Words [home, info]
25. Protein: Encarta® Online Encyclopedia, North American Edition [home, info]
26. protein: Free Dictionary [home, info]
27. protein: Mnemonic Dictionary [home, info]
28. protein: WordNet 1.7 Vocabulary Helper [home, info]
29. protein: LookWAYup Translating Dictionary/Thesaurus [home, info]
30. protein: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

31. Protein: Health & Beauty Glossary [home, info]

Computing (1 matching dictionary)

32. Protein (biochemistry), protein: Encyclopedia [home, info]

Medicine (26 matching dictionaries)

33. Protein: MedTerms.com Medical Dictionary [home, info]
34. Protein: AIDSinfo Glossary [home, info]
35. protein: Breast Cancer Talking Dictionary [home, info]
36. Protein: Diabetes Dictionary [home, info]
37. Protein(s): Merck Manuals [home, info]
38. protein: Digestive Diseases Dictionary [home, info]
39. Protein: Diabetes [home, info]
40. protein: online medical dictionary [home, info]
41. Protein: Health and Wellness Dictionary [home, info]
42. Protein: Hypermedia Glossary Of Genetic Terms [home, info]
43. Protein: Hepatitis C Information Central [home, info]
44. protein: Prostate Cancer Interactive Glossary [home, info]
45. Protein: Allergy Glossary [home, info]
46. protein: Diabetes Dictionary [home, info]
47. Protein: GI Disorders [home, info]
48. Protein: Kidney Patient Guide Glossary [home, info]
49. protein: Multiple Sclerosis Encyclopaedia [home, info]
50. Protein: AIDS Medical Glossary and Drug Chart [home, info]
51. protein: Dictionary of Cancer Terms [home, info]
52. protein: Glossary of HIV/AIDS Related Terms [home, info]
53. Protein (biochemistry), protein: Medical dictionary [home, info]
54. protein: Vitamin Glossary [home, info]
55. Protein: Obesity, Physical Activity, and Weight-control Glossary [home, info]
56. Protein: WeMove Glossary of Terms [home, info]
57. Protein: Drug Medical Dictionary [home, info]
58. protein: Hyperdictionary [home, info]

Miscellaneous (1 matching dictionary)

59. PROTEIN: Acronym Finder [home, info]

Science (12 matching dictionaries)

60. Protein: Drug Discovery and Development [home, info]
61. Protein: Biology dictionary [home, info]
62. Protein: Eric Weisstein's World of Chemistry [home, info]
63. Protein: DOE Genome Glossary [home, info]
64. protein: Tree of Life Glossary [home, info]
65. protein: Glossary of Genetic Terms [home, info]
66. protein: General Chemistry Online [home, info]
67. protein: Evolution Glossary [home, info]
68. Protein: Fishkeeping glossary [home, info]
69. protein: Anthropology dictionary [home, info]
70. protein: Natural History Terms [home, info]
71. Protein: AGRICULTURAL AND ENVIRONMENTAL BIOTECHNOLOGY [home, info]

Slang (1 matching dictionary)

72. protein: Urban Dictionary [home, info]

Sports (1 matching dictionary)

73. Protein: Body Building [home, info]

Tech (4 matching dictionaries)

74. Protein: Explosives [home, info]
75. protein, protein: JPL Terms [home, info]
76. Protein: Beauty & Health Glossary [home, info]
77. protein: Washington State Definitions and Abbreviations of Vetrinary Terms [home, info]

(Note: See proteins for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (protein) ▸ noun:  any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes ("A diet high in protein") ▸ Also see proteins ▸ Word origin ▸ Words similar to protein ▸ Usage examples for protein ▸ Popular adjectives describing protein ▸ Words that often appear near protein ▸ Rhymes of protein ▸ Invented words related to protein