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- Rhymes: -ɑːf
polygraph (plural polygraphs)
- 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.
- (dated) A mechanical instrument for multiplying copies of a writing, resembling multiple pantographs.
- (archaic) A collection of different works, either by one or several authors.
- (linguistics) A group of letters that represent a single phoneme
- (device recording physiological measurements): lie detector
- (dated instrument for copying): manifold writer, autopen
device to discern if a subject is lying