Top Definition
An Orwellian state that watches your every action and tracks everything without the knowledge of the governed. Think a Two Way Mirror. First coined on the XKCD forums.
With all of the Big Brother-esque surveillance currently in place that has been deemed Classified for "National Security Reasons" The USA is a Half-Mirror Society just begging for revolution.

We need to stay away from becoming a half-mirror society.
by Primis September 25, 2013

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