An online encyclopedia that was created using a socialist method of production. Nobody owns Wikipedia, and nobody sells it or profits monetarily from it. Eveyone contributes what they can, and everyone shares equally in the finished product.

Wikipedia currently has over 200,000 articles.
Wikipedia and other GNU projects are proof of the power of socialism to accomplish what capitalism can't.
by John February 23, 2004
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Because if it's on a free online encyclopedia that anyone can edit, it must be true!
by Slaeyn August 16, 2008
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an uberdictionary made by third-party contributors.
I learned about sex from wikipedia - Bill Gates
by Blly January 4, 2004
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Mike never uses urban dictionary, for he cannot understand definitions such as "1. Cool: yo muh niggaz up in da wes side of da c0mpt0n reprazintin daa heezy, wankstas g0t fucked by t3h mas73r 0f t3h 1337 xb0x!!! FUCK GEORGE BUSH!!!!!!!!!!!!!!!!!!", therefore, he chooses to use the Wikipedia.
by Phil smith February 25, 2006
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In an argument, stating 'Wikipedia it' is the equivalent of giving someone a middle finger
Person 1: There are only 8 planets in the solar system.
Person 2: No, there are 9 planets.
Person 1: Wikipedia it!
by gundamboyzack June 21, 2007
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It's like UD, except you use it for school.
Wikipedia used to be a place where everyone could post information, but since a dipshit posted some false information that was really upsetting to someone else, we must all now join, to post a one sentence correction of some word we just happen to stumble upon on their site. Thank you, jackass...
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