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We found 67 dictionaries with English definitions that include the word ac:
Click on the first link on a line below to go directly to a page where "ac" is defined.

General (27 matching dictionaries)

1. AC, Ac, -ac, ac, ac-: Merriam-Webster.com [home, info]
2. AC, AC, Ac, Ac, -ac, ac, ac, ac-: Oxford Dictionaries [home, info]
3. AC, Ac, Ac, a.c, ac, ac-: American Heritage Dictionary of the English Language [home, info]
4. a.c, ac: Collins English Dictionary [home, info]
5. AC, Ac: Vocabulary.com [home, info]
6. AC, ac: Macmillan Dictionary [home, info]
7. AC, Ac, ac, ac, aC: Wordnik [home, info]
8. AC, .ac, ac: Cambridge Advanced Learner's Dictionary [home, info]
9. A.C, AC, -ac, a.c, ac, ac-: Wiktionary [home, info]
10. -ac, a.c, ac, ac-: Webster's New World College Dictionary, 4th Ed. [home, info]
11. AC, Ac, -ac, ac-: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. AC: Infoplease Dictionary [home, info]
13. AC(-MCS), Ac: Dictionary.com [home, info]
14. AC (disambiguation), AC, Ac, .ac, .ac (second-level domain): Wikipedia, the Free Encyclopedia [home, info]
15. Ac: Rhymezone [home, info]
16. ac: Webster's 1828 Dictionary [home, info]
17. -ac, ac, ac-: MyWord.info [home, info]
18. -AC, A.C, AC, Ac, .ac, ac: Stammtisch Beau Fleuve Acronyms [home, info]
19. ac: Free Dictionary [home, info]
20. ac: Mnemonic Dictionary [home, info]
21. ac: WordNet 1.7 Vocabulary Helper [home, info]
22. AC, Ac: LookWAYup Translating Dictionary/Thesaurus [home, info]
23. AC, a.c, ac, ac-: Dictionary/thesaurus [home, info]
24. -ac, a.c, ac, ac-: Dictionary.com [home, info]
25. AC (complexity): Wikipedia, the Free Encyclopedia [home, info]

Art (3 matching dictionaries)

26. AC: Technical Glossary of Theatre Terms [home, info]
27. -ac, -ac: A Cross Reference of Latin and Greek Elements [home, info]
28. AC: Glossary of Stamp Collecting Terms [home, info]

Business (4 matching dictionaries)

29. AC: Travel Industry Dictionary [home, info]
30. AC: Financial dictionary [home, info]
31. a.c: Glossary of Trade and Shipping Terms [home, info]
32. AC: Radio Programming and Production [home, info]

Computing (6 matching dictionaries)

33. AC: CCI Computer [home, info]
34. AC: Technology Terms and Acronyms [home, info]
35. AC: BABEL: Computer Oriented Abbreviations and Acronyms [home, info]
36. AC: Computer Telephony & Electronics Dictionary and Glossary [home, info]
37. AC: I T Glossary [home, info]
38. a.c, ac, ac: Encyclopedia [home, info]

Medicine (6 matching dictionaries)

39. AC, a.c: MedTerms.com Medical Dictionary [home, info]
40. ac-: online medical dictionary [home, info]
41. AC: Hair Facts [home, info]
42. AC, a.c: Hepatitis C Information Central [home, info]
43. AC, -ac, a.c, a.c, ac, ac-: Medical dictionary [home, info]
44. AC, a.c: Drug Medical Dictionary [home, info]

Miscellaneous (3 matching dictionaries)

45. AC, AC, AC, a.c, a.c, a.c: Terminology and Descriptions of Geneaological Words [home, info]
46. AC(-MCS), AC-, AC: Acronym Finder [home, info]
47. AC: AbbreviationZ [home, info]

Science (3 matching dictionaries)

48. ac: Electrochemistry Dictionary [home, info]
49. AC, Ac: A Dictionary of Quaternary Acronyms and Abbreviations [home, info]
50. Ac: WebElements Periodic Table of the Elements [home, info]

Slang (2 matching dictionaries)

51. Ac: Totally Unofficial Rap [home, info]
52. A.C, AC, The AC: Urban Dictionary [home, info]

Tech (13 matching dictionaries)

53. ac: Webster's New World Telecom Dictionary [home, info]
54. A.C, AC: GEOGRAPHIC INFORMATION SYSTEMS, CARTOGRAPHY, AND REMOTE SENSING [home, info]
55. AC: Electronics [home, info]
56. AC: AUTOMOTIVE TERMS [home, info]
57. AC: Basics of Space Flight Glossary [home, info]
58. AC: DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations [home, info]
59. AC: Glossary of Agricultural Terms, Programs and Laws [home, info]
60. AC: Explosives [home, info]
61. AC: Glossary of video terms [home, info]
62. AC: National Weather Service Glossary [home, info]
63. AC (ALTERNATING CURRENT): Reliance Electric motor terms [home, info]
64. AC: Sweetwater Music [home, info]
65. AC: RF Terms Glossary [home, info]

(Note: See acing for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (Ac) ▸ noun:  an electric current that reverses direction sinusoidally ("In the US most household current is AC at 60 cycles per second") ▸ noun:  a radioactive element of the actinide series; found in uranium ores ▸ Also see acing ▸ Words similar to ac ▸ Usage examples for ac ▸ Popular adjectives describing ac ▸ Words that often appear near ac ▸ Rhymes of ac ▸ Invented words related to ac