Top Definition
AC
Air Conditioning, must usually used while driving.
Turn the AC up dawg. It's hot as shit in here.
by EmbryO13 February 19, 2005

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AC
Anarcho-capitalism.

Also known as market anarchy or voluntarism/voluntaryism.

It's the idea that only voluntary cooperation (trade, the market) are legitimate forms of human interaction.

An anarcho-capitalist therefore envisions arbitration, security and defense to be solved through competing market agents instead of forceful territorial monopolists (as all statists including minarchists defend).
Do ACists support voting for Ron Paul?
by Nielsio January 15, 2008

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ac
Alternating Current

This type of electrical current is called alternating because it switches direction. Direct current (DC) is often seen as the opposite of AC since DC only flows in one direction. Alternating current is used in most applications including the electricity that comes out of the outlet in your wall.
The AC flowing through this wire will kill you.
by IIT Deep June 21, 2005

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Slang term for Atlantic City, New Jersey.

See also America's Playground.
I'm going to go hit the casinos in A.C., want to come along?
by Led Zeppole November 11, 2003

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Ac
A 1991-1995 Acura Legend. Usually still in use by pimps and thugs do to its spacious interior, pimped out sound system, and general bling blingness.
that brutha's rollin in an Ac
by Rob June 23, 2003

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AC
Anti-chill; any behavior that completely violates the essence of chill.
Robbie: I'm so fucking pissed I didn't close last night, such bullshit. Get the fuck away from me.
Ethan: Relax, dude. You're being AC. Get off your ass and let's get fucked up with the boys.
Robbie: That's pretty eeb, but minus well.
by mcchex December 18, 2013

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A C
Homosexual or Bi-Sexual. Urban take on the literal term Alternating Current abbreviated A C. The term D C would mean someone that is straight.
Stephen King's book "The Talisman" has the lead character telling a man who's making a pass at him "No thanks, I'm strictly D C" to which the man replies "You think I'm A C?"
by nuke-marine September 06, 2006

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