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polygraph Definition

poly·graph (päl′i graf′)

noun

  1. an early device for reproducing writings or drawings
  2. an instrument for recording simultaneously changes in blood pressure, respiration, pulse rate, etc.

Etymology: Gr polygraphos, writing much: see poly- & -graph

Related Forms:

polygraph Usage Examples

Converse of object

  • use: Using a polygraph, Hearne could watch the eye movements for signs of the special signal.
  • take: If you have been asked to take a polygraph, then you might want to click here first.

Modifies a noun

  • examination: Why don't you submit MckNight, the TV show host to a polygraph examination?
  • test: I think it's the same reason why she agreed to take the polygraph test.
  • testing: In reality polygraph testing is a highly questionable method of separating truth from falsehood, whether the results are positive or negative.
  • examiner: The rule was that if the polygraph examiner did not produce the desired results he was no good.
  • machine: Current polygraph machines that monitor blood pressure, perspiration, breathing and pulse rates cost up to £ 7,000.