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polygraph

play
noun poly·graph \ˈpä-lē-ˌgraf\

Simple Definition of polygraph

  • : a test that is done with a lie detector to see if someone is telling the truth

Source: Merriam-Webster's Learner's Dictionary

Full Definition of polygraph

  1. :  an instrument for recording variations of several different pulsations (as of physiological variables) simultaneously — compare lie detector

polygraphic

play \ˌpä-lē-ˈgra-fik\ adjective

Examples of polygraph in a sentence

  1. They hooked him up to the polygraph and began the test.

  2. She was asked to take a polygraph.



1871

First Known Use of polygraph

1871


Medical Dictionary

polygraph

play
noun poly·graph \ˈpäl-i-ˌgraf\

Medical Definition of polygraph

  1. :  an instrument for simultaneously recording variations of several different pulsations (as of the pulse, blood pressure, and respiration)—see lie detector

polygraphic

\ˌpäl-i-ˈgraf-ik\play adjective

polygraphically

\-i-k(ə-)lē\play adverb



Law Dictionary

polygraph

play
noun poly·graph \ˈpä-lē-ˌgraf\

Legal Definition of polygraph

  1. :  an instrument that records physiological pulsations; especially :  lie detector

polygraphic

\ˌpä-lē-ˈgra-fik\ play adjective



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