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1 definition by meistermilton

 
1.
term for a phenomenon which today is better known as "automatic" or "unconscious" talking. The person who "speaks in tongues" is unaware of what he says, he could talk in a foreign or made-up language, or fall back into speech patterns of his childhood.

Is mostly induced
by either psychoactive drugs (e.g. opium, lsd, psilocybin, mescaline) or a deep hypnotic trance.
Spectator: "They are speaking in tongues!"
by meistermilton June 02, 2004