AskDefine | Define AC

Dictionary Definition



1 a radioactive element of the actinide series; found in uranium ores [syn: actinium, atomic number 89]
2 an electric current that reverses direction sinusoidally; "In the US most household current is AC at 60 cycles per second" [syn: alternating current] [ant: direct current]

User Contributed Dictionary


  1. (electrical) Alternating Current
  2. (electrical): often used to indicate an alternating potential rather than a current, as in 110V AC.
  3. Air Conditioning, usually: A/C
  4. as charged, as in: guilty as charged, usually: a/c
  5. Area Code
  6. Antichristian
  7. all clear, as in button on electronic calculator
  8. audible chuckle
  9. axiom of choice
  10. Companion of the Order of Australia.
  11. Adult contemporary, a radio format


Derived terms


alternating current
alternating potential
  1. Aceh, an autonomous province of Indonesia.
  2. Acre, a state of Brazil.






  1. Acre (Brazilian state)

Extensive Definition

AC may refer to any of the following, broken down by subject area.



  • ante cibum (before meals)



  • AC (complexity), a hierarchy of complexity classes found in circuit complexity
  • .ac, Internet top-level domain name for Ascension Island
  • .ac (second level), Internet second-level domain used to denote academic institutions in many countries
  • Anonymous Coward, in the Slashdot online environment
  • Authorization certificate or attribute certificate, a digital permission to use a service or resource
  • Arctic Cooling, a Swiss manufacturer of heatsinks, cooling fans and computer cases.
  • Auto clickers, which are commonly referred to in MMORPGs as ACs.


Job Titles / Ranks



  • Associazione Calcio (Italian for "Football (soccer) Association"), an identifier frequently found in the names of football clubs in Italy, most notably:
    • A.C. Milan, one of the most storied clubs in that country
  • Athletic Club
  • Abbreviation for Athletic club


Video games

  • Animal Crossing (series), a series of real-time village simulations by Nintendo
  • Assassin's Creed, a platformer/stealth game for the Microsoft Windows, Xbox 360, PlayStation 3, and Nintendo DS platforms.
  • Armored Core, a video game series featuring the eponymous robotic fighter under the player's control.
  • Asheron's Call, a fantasy massively multiplayer online role-playing genre
  • The Ace Combat series of combat flight simulator games
  • "AC" is sometimes used as an abbreviation for "arcade". Therefore, it is often used as a suffix to designate a new or separate version of a game, or even merely as the abbreviation for a revision:
    • Melty Blood: Act Cadenza, a two-dimensional fighting game featuring characters from Tsukihime
    • Guilty Gear XX Accent Core, a two-dimensional fighting game, part of the Guilty Gear series
    • Tekken 5 on the PlayStation 2 features a mode that allows one to play the arcade versions of Tekken, Tekken 2, and Tekken 3, labeled "AC"
  • Alliance Character as used by Horde players in the MMORPG World of Warcraft
  • Arvoch Conflict, a shareware flight simulator by Star Wraith 3D Games
  • Ace Combat, a series of flight/combat games by Namco.





AC in Czech: AC
AC in Welsh: AC
AC in Danish: AC
AC in German: AC
AC in Spanish: AC
AC in Esperanto: Ac
AC in French: AC
AC in Korean: AC
AC in Italian: AC
AC in Dutch: AC
AC in Japanese: AC
AC in Norwegian: AC
AC in Norwegian Nynorsk: AC
AC in Polish: AC
AC in Portuguese: AC
AC in Kölsch: AC (Watt ėßß datt?)
AC in Slovak: AC
AC in Slovenian: AC
AC in Finnish: Ac
AC in Swedish: AC
AC in Vietnamese: Ac
AC in Turkish: AC
AC in Chinese: Ac

Synonyms, Antonyms and Related Words

DC, absorption current, active current, alternating current, conduction current, convection current, cycle, delta current, dielectric displacement current, direct current, displacement current, eddy current, electric current, electric stream, emission current, exciting current, free alternating current, galvanic current, high-frequency current, idle current, induced current, induction current, ionization current, juice, low-frequency current, magnetizing current, multiphase current, pulsating direct current, reactive current, rotary current, single-phase alternating current, stray current, thermionic current, thermoelectric current, three-phase alternating current, voltaic current, watt current
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