Keeler polygraph

noun Kee·ler polygraph \"-\

Definition of Keeler polygraph

  1. :  an instrument for making a graphic record of the changes in blood pressure and pulse and respiration rate of someone being questioned under or as if under suspicion of guilt —called also lie detector

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Origin and Etymology of keeler polygraph

after Leonarde Keeler †1949 American criminologist, its inventor

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a rounded knoll or a ridge of ice

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