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We found 70 dictionaries with English definitions that include the word sign:
Click on the first link on a line below to go directly to a page where "sign" is defined.

General (34 matching dictionaries)

1. sign: Merriam-Webster.com [home, info]
2. sign, sign: Oxford Dictionaries [home, info]
3. sign: American Heritage Dictionary of the English Language [home, info]
4. sign: Collins English Dictionary [home, info]
5. sign: Vocabulary.com [home, info]
6. sign, sign: Macmillan Dictionary [home, info]
7. Sign, sign, sign: Wordnik [home, info]
8. sign: Cambridge Advanced Learner's Dictionary [home, info]
9. Sign: Wiktionary [home, info]
10. sign: Webster's New World College Dictionary, 4th Ed. [home, info]
11. sign: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. sign: Infoplease Dictionary [home, info]
13. sign: Dictionary.com [home, info]
14. sign (n.), sign (v.): Online Etymology Dictionary [home, info]
15. sign: UltraLingua English Dictionary [home, info]
16. sign: Cambridge Dictionary of American English [home, info]
17. sign: Cambridge International Dictionary of Idioms [home, info]
18. Sign (Flow song), Sign (SBS television series), Sign (TV series), Sign (album), Sign (astrology), Sign (band), Sign (disambiguation), Sign (linguistics), Sign (math), Sign (mathematics), Sign (medical), Sign (medicine), Sign (semiotic), Sign (semiotics), Sign, The Sign (Ace of Base song), The Sign (album), The Sign (band), The Sign (song): Wikipedia, the Free Encyclopedia [home, info]
19. sign: Cambridge International Dictionary of Phrasal Verbs [home, info]
20. Sign: Online Plain Text English Dictionary [home, info]
21. sign: Webster's Revised Unabridged, 1913 Edition [home, info]
22. sign: Rhymezone [home, info]
23. sign: AllWords.com Multi-Lingual Dictionary [home, info]
24. sign: Webster's 1828 Dictionary [home, info]
25. sign: All About Homonyms [home, info]
26. sign: Free Dictionary [home, info]
27. sign: Mnemonic Dictionary [home, info]
28. sign: WordNet 1.7 Vocabulary Helper [home, info]
29. sign: LookWAYup Translating Dictionary/Thesaurus [home, info]
30. sign: Dictionary/thesaurus [home, info]
31. Sign (literary term), Sign: UVic Writer's Guide [home, info]
32. sign: Wikimedia Commons US English Pronunciations [home, info]

Art (4 matching dictionaries)

33. sign: ArtLex Lexicon of Visual Art Terminology [home, info]
34. SIGN: Shakespeare Glossary [home, info]
35. sign-: A Cross Reference of Latin and Greek Elements [home, info]
36. Sign: Glossary of Stamp Collecting Terms [home, info]

Business (7 matching dictionaries)

37. sign: Law.com Dictionary [home, info]
38. Sign: THE 'LECTRIC LAW LIBRARY'S REFERENCE ROOM [home, info]
39. sign: Glossary of Legal Terms [home, info]
40. Sign: Construction Term Glossary [home, info]
41. SIGN: Bouvier's Law Dictionary 1856 Edition [home, info]
42. Sign (semiotics), sign: Legal dictionary [home, info]
43. sign: BusinessDictionary.com [home, info]

Computing (2 matching dictionaries)

44. sign: Hacking Lexicon [home, info]
45. sign: Encyclopedia [home, info]

Medicine (11 matching dictionaries)

46. Sign: MedTerms.com Medical Dictionary [home, info]
47. sign: Natural Health glossary [home, info]
48. Sign: MedFriendly Glossary [home, info]
49. sign: online medical dictionary [home, info]
50. Sign: Hepatitis C Information Central [home, info]
51. Sign: Allergy Glossary [home, info]
52. sign: Parents' Common Sense Encyclopedia [home, info]
53. sign: Terms in the field of Psychiatry and Neurology [home, info]
54. sign: Glossary of HIV/AIDS Related Terms [home, info]
55. Sign (semeiotic), sign: Medical dictionary [home, info]
56. Sign: Drug Medical Dictionary [home, info]

Miscellaneous (4 matching dictionaries)

57. Sign: Brilliant Dream Dictionary [home, info]
58. SIGN: Acronym Finder [home, info]
59. SIGN: AbbreviationZ [home, info]
60. sign: Idioms [home, info]

Religion (1 matching dictionary)

61. SIGN: Irivng Hexham's Concise Dictionary of Religion [home, info]

Science (4 matching dictionaries)

62. sign: Archaeology Wordsmith [home, info]
63. Sign: Eric Weisstein's World of Mathematics [home, info]
64. sign: Anthropology dictionary [home, info]
65. sign: How Many? A Dictionary of Units of Measurement [home, info]

Slang (1 matching dictionary)

66. The Sign: Urban Dictionary [home, info]

Tech (2 matching dictionaries)

67. Sign: AUTOMOTIVE TERMS [home, info]
68. sign: Television: Critical Methods and Applications [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (sign) ▸ noun:  a perceptible indication of something not immediately apparent (as a visible clue that something has happened) ("He showed signs of strain") ▸ noun:  a public display of a (usually written) message ("He posted signs in all the shop windows") ▸ noun:  a character indicating a relation between quantities ("Don't forget the minus sign") ▸ noun:  a gesture that is part of a sign language ▸ noun:  a fundamental linguistic unit linking a signifier to that which is signified ("The bond between the signifier and the signified is arbitrary--de Saussure") ▸ noun:  (medicine) any objective evidence of the presence of a disorder or disease ("There were no signs of asphixiation") ▸ noun:  structure displaying a board on which advertisements can be posted ("The highway was lined with signboards") ▸ noun:  an event that is experienced as indicating important things to come ("It was a sign from God") ▸ noun:  having an indicated pole (as the distinction between positive and negative electric charges) ("Charges of opposite sign") ▸ noun:  any communication that encodes a message ("Signals from the boat suddenly stopped") ▸ noun:  (astrology) one of 12 equal areas into which the zodiac is divided ▸ verb:  engage by written agreement ("They signed two new pitchers for the next season") ▸ verb:  approve and express assent, responsibility, or obligation ("Have you signed your contract yet?") ▸ verb:  be engaged by a written agreement ("He signed to play the casino on Dec. 18") ▸ verb:  communicate in sign language ("I don't know how to sign, so I could not communicate with my deaf cousin") ▸ verb:  mark with one's signature; write one's name (on) ("She signed the letter and sent it off") ▸ verb:  communicate silently and non-verbally by signals or signs ("He signed his disapproval with a dismissive hand gesture") ▸ verb:  place signs, as along a road ("Sign an intersection") ▸ verb:  make the sign of the cross over someone in order to call on God for protection; consecrate ▸ Word origin ▸ Words similar to sign ▸ Usage examples for sign ▸ Popular adjectives describing sign ▸ Words that often appear near sign ▸ Rhymes of sign ▸ Invented words related to sign