Dictionary
2 ENTRIES FOUND:

polygraph

noun poly·graph \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

polygraph

noun poly·graph \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

Browse

Next Word in the Dictionary: polygrapherPrevious Word in the Dictionary: PolygordiusAll Words Near: polygraph
March 30, 2015
amphibology Hear it
A phrase with more than one interpretation
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears