It is one of the names given to the immersive virtual environment, where you can interact with other people in the form of an avatar. It is typical of network games, virtual visits to museums or fairs, social networks such as Second Life, and even interactive maps or augmented reality environments. It is formed by the Greek prefix meta- ("beyond, elsewhere") latin versus (participle of pouring "to turn around"), as "the alternative environment, the evolution of the natural environment". The term became known for the novel Snow Crash (Neal Stephenson, 1992), which is set in a virtual universe.
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