lie detector

noun

Definition of lie detector

: a polygraph for detecting physiological evidence (such as change in heart rate) of the tension that accompanies lying

Synonyms for lie detector

Synonyms

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Examples of lie detector in a Sentence

The murder suspect failed a lie detector test. hooked the suspect up to a lie detector before interrogating him about the robbery
Recent Examples on the Web Check out Sabrina’s complete video and check out prior celeb lie detector tests below. Mike Rose, cleveland, 26 Nov. 2021 Lil Nas X is ready for the results of Maury's lie detector test! Dan Heching, PEOPLE.com, 18 Nov. 2021 Shawn Mendes takes the infamous Vanity Fair lie detector test. Mike Rose, cleveland, 1 Nov. 2021 Like the lie detector polygraph, responses to the questions need to be compared to a baseline. Neil Senturia, San Diego Union-Tribune, 7 Oct. 2021 In other iterations of the show, this has involved a lie detector. Kimi Robinson, The Arizona Republic, 15 Aug. 2021 Addison Rae takes Vanity Fair’s infamous lie detector test. Mike Rose, cleveland, 14 Sep. 2021 Dua Lipa takes Vanity Fair’s infamous lie detector test. Mike Rose, cleveland, 27 Aug. 2021 Legal representative for the alleged victim, Brian Premo, on Friday told local news outlet Times Union that his client had agreed to take a lie detector test. Caitlin Mcfall, Fox News, 31 July 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lie detector.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of lie detector

1909, in the meaning defined above

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Time Traveler for lie detector

Time Traveler

The first known use of lie detector was in 1909

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Dictionary Entries Near lie detector

Liederkranz

lie detector

lie down

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Statistics for lie detector

Last Updated

30 Nov 2021

Cite this Entry

“Lie detector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lie%20detector. Accessed 9 Dec. 2021.

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More Definitions for lie detector

lie detector

noun

English Language Learners Definition of lie detector

: a device used to measure the heart rate, breathing, etc., in order to find out if someone (such as a person suspected of a crime) is being honest

lie detector

noun
\ ˈlī-di-ˌtek-tər How to pronounce lie detector (audio) \

Medical Definition of lie detector

: a polygraph for detecting physiological evidence (as change in heart rate) of the tension that accompanies lying

lie detector

noun
lie de·​tec·​tor

Legal Definition of lie detector

: an instrument for detecting physiological evidence of the tension that accompanies lying — compare polygraph

More from Merriam-Webster on lie detector

Britannica.com: Encyclopedia article about lie detector

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