Definition of Polygraph in visual dictionary together with synonyms and in real context for GRE candidates and advanced ESL learners. All of the synonyms are also carefully illustrated.
/ˈpɒl.ɪ.grɑːf/ US /ˈpɑː.lɪ.græf/ (noun)
Definition
a special machine as a lie detector used to monitor significant physiological changes in a person such as heartbeat, breathing or pulse changes to determine whether the person is lying or not, lie detector, tester, recorder
a test using a polygraph or lie detector
Example
A polygraph, popularly referred to as a lie detector test, is a device or procedure that measures and records several physiological indicators such as blood pressure, pulse, respiration, and skin conductivity while a person is asked and answers a series of questions.
Source of example: https://en.wikipedia.org/
Parts of speech
Adjective: polygraphic
Adverb: polygraphically
