A person who practices biloquy, or speaks in two places at once (used historically in theology and spiritualism).
From Latin 'bi-' (two) + 'loqui' (to speak). Medieval theologians used this term to describe supposed supernatural ability to make one's voice appear in two locations simultaneously, blending with mystical traditions.
Medieval mystics and spiritualists claimed this power to prove supernatural ability, but it's basically impossible—though ventriloquists centuries later would use similar ideas to amaze audiences by seemingly throwing their voices!
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