as in lie detector
an instrument for detecting physical signs of the tension that goes with lying
intelligence agents were trained to fool the polygraph
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Examples of polygraph in a Sentence
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Keith, who passed a polygraph test in the case, said that Sherri only weighed 87 pounds when she was found and that her long blond hair had been cut short.
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Jessica Sager, Peoplemag, 20 June 2024
Eventually, Keith successfully passed a polygraph test, and investigators cleared him of any suspicion.
—Rachel Brodsky, TIME, 18 June 2024
Then Bay County Sheriff John Miller told the Free Press Powell had twice failed a polygraph test, including the day before the search.
—John Wisely, Detroit Free Press, 27 May 2024
Shoddy but widely reported experiments in the 1970s claimed to show humanlike behaviors in plants, such as enjoying Beethoven and responding to polygraph tests.
—David George Haskell, Scientific American, 16 Apr. 2024
See all Example Sentences for polygraph 
Jessica Sager, Peoplemag, 20 June 2024
Eventually, Keith successfully passed a polygraph test, and investigators cleared him of any suspicion.
—Rachel Brodsky, TIME, 18 June 2024
Then Bay County Sheriff John Miller told the Free Press Powell had twice failed a polygraph test, including the day before the search.
—John Wisely, Detroit Free Press, 27 May 2024
Shoddy but widely reported experiments in the 1970s claimed to show humanlike behaviors in plants, such as enjoying Beethoven and responding to polygraph tests.
—David George Haskell, Scientific American, 16 Apr. 2024
See all Example Sentences for polygraph
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'polygraph.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“Polygraph.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/polygraph. Accessed 2 Oct. 2024.
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