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English word polygraph comes from a Greek root poly- (many) and -graph (writing), thus one that makes multiple copies. The word was first used to refer to an "instrument for recording several pulsations of the body at the same time" in 1871
poly- (English)
Many. Multiple
-graph (English)
(Metonymic) that is written. A group of letters of a specified number.. That writes. (by analogy) that draws or shows. (metonymic) that is drawn or shown.
polygraph (English)
(archaic) A collection of different works, either by one or several authors.. (dated) A mechanical instrument for multiplying copies of a writing, resembling multiple pantographs.. (linguistics) A group of letters that represent a single phoneme. A device which measures and records several physiological variables such as blood pressure, heart rate, respiration and skin conductivity while a [...]