Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A polygraph used to detect possible deception during an interrogation.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A polygraph, 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.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a polygraph that records bodily changes sometimes associated with lying

Etymologies

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