polygraph

noun

ˈpä-lē-ˌgraf How to pronounce polygraph (audio)
Definition of polygraphnext
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 are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of polygraph Diane agreed to take a polygraph test to clear her name. — Doc Louallen, ABC News, 7 Feb. 2025 Denver police started an internal affairs investigation in July after the Scottsdale Police Department alerted Denver to its findings during Gurley’s polygraph exam for a job there. — Shelly Bradbury, The Denver Post, 20 Dec. 2024 As early as 1923, the U.S. Court of Appeals for the District of Columbia ruled polygraph results inadmissible at trial because the tests were not widely accepted by relevant experts. — Susan Saulny, Smithsonian Magazine, 22 Oct. 2024 Her boyfriend cooperated with police, passed a polygraph test and was cleared as a suspect, the investigators said. — Gloria Casas, Chicago Tribune, 31 Jan. 2025 See All Example Sentences for polygraph

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“Polygraph.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/polygraph. Accessed 26 Mar. 2025.

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Britannica.com: Encyclopedia article about polygraph

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