polygraph


poly·graph

noun \ˈpä-lē-ˌgraf\

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

Full Definition of POLYGRAPH

:  an instrument for recording variations of several different pulsations (as of physiological variables) simultaneously — compare lie detector
poly·graph·ic \ˌpä-lē-ˈgra-fik\ adjective

Examples of POLYGRAPH

  1. They hooked him up to the polygraph and began the test.
  2. She was asked to take a polygraph.

First Known Use of POLYGRAPH

1871

Related to POLYGRAPH

Synonyms
lie detector

poly·graph

noun \ˈpäl-i-ˌgraf\   (Medical Dictionary)

Medical Definition of POLYGRAPH

: an instrument for simultaneously recording variations of several different pulsations (as of the pulse, blood pressure, and respiration)—see lie detector
poly·graph·ic \ˌpäl-i-ˈgraf-ik\ adjective
poly·graph·i·cal·ly \-i-k(ə-)lē\ adverb

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