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We found 76 dictionaries with English definitions that include the word in:
Click on the first link on a line below to go directly to a page where "in" is defined.

General (38 matching dictionaries)

1. IN, In, -in, in, in-: Merriam-Webster.com [home, info]
2. IN, In, In, -in, -in, in, in, in-, in-: Oxford Learner's Dictionaries [home, info]
3. IN, In, in, in, in-, in-: American Heritage Dictionary of the English Language [home, info]
4. -in, in, in, in-: Collins English Dictionary [home, info]
5. IN, In, in: Vocabulary.com [home, info]
6. IN, in, in, in, in-: Macmillan Dictionary [home, info]
7. I.N, IN, I'n, In, In, In, -in, i'n, in, in, in, in, in, in, in, in, in, in, in-, iN, the-in: Wordnik [home, info]
8. -in, in, in-: Cambridge Advanced Learner's Dictionary [home, info]
9. -in, -in', i'n, in, in-: Wiktionary [home, info]
10. -in, in, in-: Webster's New World College Dictionary, 4th Ed. [home, info]
11. IN (Ind.), In, -in, in, in, in-: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. in: Infoplease Dictionary [home, info]
13. In-, -in, .in, in, in, in-: Dictionary.com [home, info]
14. in, in- (1): Online Etymology Dictionary [home, info]
15. in: UltraLingua English Dictionary [home, info]
16. in, in-: Cambridge Dictionary of American English [home, info]
17. in, in, in: Cambridge International Dictionary of Idioms [home, info]
18. IN, In (Korean name), In, .in: Wikipedia, the Free Encyclopedia [home, info]
19. in: Cambridge International Dictionary of Phrasal Verbs [home, info]
20. In-, In, -in: Online Plain Text English Dictionary [home, info]
21. in, in-: Webster's Revised Unabridged, 1913 Edition [home, info]
22. in: Rhymezone [home, info]
23. In-, in, in, in, in: AllWords.com Multi-Lingual Dictionary [home, info]
24. in: Webster's 1828 Dictionary [home, info]
25. -in, in, in-: MyWord.info [home, info]
26. IN, In, .in, in: Stammtisch Beau Fleuve Acronyms [home, info]
27. in: All About Homonyms [home, info]
28. in, in-: Free Dictionary [home, info]
29. in, in, in, in: The Phrontistery - A Dictionary of Obscure Words [home, info]
30. in: Mnemonic Dictionary [home, info]
31. in: WordNet 1.7 Vocabulary Helper [home, info]
32. In, in: LookWAYup Translating Dictionary/Thesaurus [home, info]
33. In, in, in, in-: Dictionary/thesaurus [home, info]
34. in: Wikimedia Commons US English Pronunciations [home, info]
35. in- (2): Online Etymology Dictionary [home, info]
36. In: Wordnik [home, info]

Art (4 matching dictionaries)

37. in: ArtLex Lexicon of Visual Art Terminology [home, info]
38. in: Paris Cookbook [home, info]
39. in-: A Cross Reference of Latin and Greek Elements [home, info]
40. IN: Glossary of Stamp Collecting Terms [home, info]

Business (6 matching dictionaries)

41. IN: MoneyGlossary.com [home, info]
42. IN: Travel Industry Dictionary [home, info]
43. in: Glossary of Legal Terms [home, info]
44. IN: Bloomberg Financial Glossary [home, info]
45. In (disambiguation), in, in: Legal dictionary [home, info]
46. IN, In (disambiguation): Financial dictionary [home, info]

Computing (5 matching dictionaries)

47. in: Free On-line Dictionary of Computing [home, info]
48. IN: CCI Computer [home, info]
49. IN: BABEL: Computer Oriented Abbreviations and Acronyms [home, info]
50. IN (Intelligent Network): Linktionary Networking Glossary [home, info]
51. In (disambiguation), In, in: Encyclopedia [home, info]

Medicine (4 matching dictionaries)

52. in: MedTerms.com Medical Dictionary [home, info]
53. in, in-: online medical dictionary [home, info]
54. In (disambiguation), In, -in, in(o)-, in-: Medical dictionary [home, info]
55. in: Drug Medical Dictionary [home, info]

Miscellaneous (4 matching dictionaries)

56. IN: Acronym Finder [home, info]
57. IN: AbbreviationZ [home, info]
58. IN: Idioms [home, info]
59. IN: United States Postal Service Official Abbreviations [home, info]

Science (6 matching dictionaries)

60. in: Dictionary of Botanical Epithets [home, info]
61. in: Misunderstood Physics Terms [home, info]
62. In(A), In(B): Cytokines & Cells Online Pathfinder Encyclopaedia [home, info]
63. in-: Glossary of Roots of Botanical Names [home, info]
64. IN, In, in: A Dictionary of Quaternary Acronyms and Abbreviations [home, info]
65. In: WebElements Periodic Table of the Elements [home, info]

Slang (3 matching dictionaries)

66. In: Street Terms: Drugs and the Drug Trade [home, info]
67. in: ESL Slang page [home, info]
68. I.N: Urban Dictionary [home, info]

Sports (2 matching dictionaries)

69. In, in: Hickok Sports Glossaries [home, info]
70. in: Golfer's Dictionary [home, info]

Tech (4 matching dictionaries)

71. in: Webster's New World Telecom Dictionary [home, info]
72. IN, in: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING [home, info]
73. IN: DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations [home, info]
74. IN: National Weather Service Glossary [home, info]

(Note: See ining for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (in) ▸ noun:  a unit of length equal to one twelfth of a foot ▸ noun:  a rare soft silvery metallic element; occurs in small quantities in sphalerite ▸ noun:  a state in midwestern United States ▸ adjective:  currently fashionable ("The in thing to do") ▸ adverb:  inside an enclosed space ▸ adverb:  to or toward the inside of ("Come in") ▸ name:  A female given name (common: 1 in 33333 females; popularity rank in the U.S.: #1979) ▸ name:  A surname (very rare: popularity rank in the U.S.: #21503) ▸ Also see ining ▸ Word origin ▸ Words similar to in ▸ Usage examples for in ▸ Idioms related to in (New!) ▸ Popular adjectives describing in ▸ Popular nouns described by in ▸ Words that often appear near in ▸ Rhymes of in ▸ Invented words related to in