lie detector


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lie detector

n.
An instrument designed to detect when a person has answered a question falsely.

lie detector

n
a polygraph used esp by a police interrogator to detect false or devious answers to questions, a sudden change in one or more involuntary physiological responses being considered a manifestation of guilt, fear, etc. See polygraph1, galvanic skin response

lie′ detec`tor


n.
an instrument that produces a record of the changes in certain body activities, as blood pressure, pulse, and breathing, which may be interpreted to indicate the truth or falsity of a person's answers under questioning.
Also called polygraph.
[1905–10]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.lie detector - a polygraph that records bodily changes sometimes associated with lyinglie detector - a polygraph that records bodily changes sometimes associated with lying
electrical skin response, electrodermal response, Fere phenomenon, galvanic skin response, GSR, psychogalvanic response, Tarchanoff phenomenon - a change in the electrical properties of the skin in response to stress or anxiety; can be measured either by recording the electrical resistance of the skin or by recording weak currents generated by the body
polygraph - a medical instrument that records several physiological processes simultaneously (e.g., pulse rate and blood pressure and respiration and perspiration)
Translations

lie detector

lie detector

nmacchina della verità
References in periodicals archive ?
IRELAND'S only professional lie detector is enjoying a seasonal surge in demand as partners suspected of festive frolics are frogmarched in for polygraph tests.
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He takes a lie detector test to prove his words once and for all.
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Raja -- the prime accused in the case -- had refused to undergo the lie detector test.
Fisher discovered how 18- to 25-year-olds would respond honestly to questions about sexuality and other gender-role behaviors by asking some study participants questions when they thought they were hooked up to a lie detector machine.
In spite of facing a police investigation over the Au50million prisoner tagging fiasco, blundering G4S is in line for a state contract for lie detector testing.
Fisher discovered how people would honestly respond to questions about sexuality and other gender-role behaviors by asking some study participants questions when they thought they were hooked up to a lie detector machine.