Dictionary
lie detector
noun
: 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
Full Definition of LIE DETECTOR
: a polygraph for detecting physiological evidence (as change in heart rate) of the tension that accompanies lying
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First Known Use of LIE DETECTOR
1909
Related to LIE DETECTOR
- Synonyms
- polygraph
Rhymes with LIE DETECTOR
Medical Dictionary
lie detector
noun \ˈlī-di-ˌtek-tər\
Medical Definition of LIE DETECTOR
: a polygraph for detecting physiological evidence (as change in heart rate) of the tension that accompanies lying
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