lie detector
noun
: a polygraph for detecting physiological evidence (such as change in heart rate) of the tension that accompanies lying
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
The accused cried over his claimed loss of good name and reputation over such accusations but repeatedly turned down multiple offers of a full and thorough investigation by any law enforcement agencies or to take a lie detector test as his accuser was willing to do.
—
Contributed Content, Twin Cities, 8 Feb. 2025
Thanks to an assist from Dr. Gabriela Torabi, the president’s therapist, Xavier is saved from a lie detector test that Samantha is closely monitoring.
—Maggie Fremont, Vulture, 31 Jan. 2025
Later, he’s locked in an interrogation room and connected to lie detectors, being questioned by a character played by Krys Marshall, and nudged to lie about his feelings by another (Sarah Shahi) — who claims to have a message from Cal himself.
—Proma Khosla, IndieWire, 16 Jan. 2025
Those who tried Silk vs. milk could then take a lie detector done by polygraph specialist John Grogan.
—Victoria Uwumarogie, Essence, 16 Jan. 2025
See all Example Sentences for lie detector 
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Contributed Content, Twin Cities, 8 Feb. 2025
Thanks to an assist from Dr. Gabriela Torabi, the president’s therapist, Xavier is saved from a lie detector test that Samantha is closely monitoring.
—Maggie Fremont, Vulture, 31 Jan. 2025
Later, he’s locked in an interrogation room and connected to lie detectors, being questioned by a character played by Krys Marshall, and nudged to lie about his feelings by another (Sarah Shahi) — who claims to have a message from Cal himself.
—Proma Khosla, IndieWire, 16 Jan. 2025
Those who tried Silk vs. milk could then take a lie detector done by polygraph specialist John Grogan.
—Victoria Uwumarogie, Essence, 16 Jan. 2025
See all Example Sentences for lie detector
Dictionary Entries Near lie detector
Cite this Entry
“Lie detector.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lie%20detector. Accessed 21 Feb. 2025.
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lie detector
noun
: a polygraph for detecting physiological evidence (as change in heart rate) of the tension that accompanies lying
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