POLYGRAPH

noun
20 Scrabble
22 WWF
P 3
O 1
L 1
Y 4
G 2
R 1
A 1
P 3
H 4

Definition

A device which measures and records several physiological variables such as blood pressure, heart rate, respiration and skin conductivity while a series of questions is being asked to a subject, in an attempt to detect lies.

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