Examples of polygraph in a Sentence
They hooked him up to the polygraph and began the test.
She was asked to take a polygraph.
Recent Examples of polygraph from the Web
In a letter to then Director of Prisons George Solomon, a regional manager recommended that Boyd be required to take a polygraph.
A 1974 strike poster and 1955 polygraph machine also are on display.
Heasley was crowned the winner after catching the event’s biggest white marlin, but Heasley and his boat mates were disqualified after failing polygraph tests.
After the surfer has completed their run, they’ll be interviewed and their analysis with be matched up with specific data points, in the same way a polygraph administrator would pair up lies told with spikes in the chart.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'polygraph'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Did You Know?
With its graph- root, polygraph indicates that it writes out several different results. A polygraph's output consists of a set of squiggly lines on a computer screen, each indicating one function being tested. The functions most commonly measured are blood pressure, breathing rate, pulse, and perspiration, all of which tend to increase when you lie. Polygraphs have been in use since 1924, and have gotten more sensitive over the years, though many experts still believe that they're unreliable and that a prepared liar can fool the machine. They're used not only for law enforcement but perhaps more often by employers--often the police department itself!--who don't want to hire someone who has broken the law in the past but won't admit to it.
First Known Use of polygraph
POLYGRAPH Defined for English Language Learners
Definition of polygraph for English Language Learners
: a test that is done with a lie detector to see if someone is telling the truth
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
Seen and Heard
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