Top Definition
government by the media; a form of government in which the supreme power is vested in the corporations and exercised directly by them or by their elected agents.
The mediacracy instructs me every day through the internet, radio and T.V. how to be the perfect American.
by Deborah Spicer October 30, 2006
A society ruled by Facebook, Twitter, and Google.
21st Century America is a mediacracy.
by Ukulelelike December 21, 2012

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