noun. a tool which gauges and documents a lot of physiological symptoms of anxiety or emotion. The tool has been widely utilized in the interrogation of criminal suspects and in the screening of employees to gauge significant physiological responses to queries about lying, theft, or carnal deviation. It has been colloquially referenced as a lie detector, even though no one has ever recorded a close relation between physiological trends and deceptive behavior. The correctness of these tests is highly debated, and the results are not allowed as evidence in multiple American courtrooms.
POLYGRAPH: "The polygraph test was drummed up by an American experimental psychologist named William Marston."