verb (used with object)
Origin of polygraph
Examples from the Web for polygraph
The polygraph, which uses a range of measurements including blood pressure, was patented by Leonarde Keeler in 1931.Wonder Woman’s Creation Story Is Wilder Than You Could Ever Imagine|Tom Arnold-Forster|November 3, 2014|DAILY BEAST
By way of proving his innocence, DeMaio took a polygraph test—and passed.No Shaking Sexual Harassment Allegations for Gay GOP House Hopeful|Olivia Nuzzi|October 12, 2014|DAILY BEAST
Yesterday, The Daily Beast revealed that Egan had, according to his lawyer Jeff Herman, passed a polygraph test.Third Hollywood Power Player Files Motion to Dismiss Sex Abuse Lawsuit|Tim Teeman|May 22, 2014|DAILY BEAST
DeMaio responded to the “vicious rumor” by taking a polygraph test, which he passed.
Forced to take a polygraph test, Saul is asked a question to establish a baseline reading: “Are you sometimes called ‘The Bear’?”Give Mandy Patinkin an Emmy Nomination for ‘Homeland,’ Already!|Jason Lynch|July 17, 2013|DAILY BEAST
All I want to do is tell the truth, and the only way you can know it is by the polygraph, as that is the only way you can know it.
Pentathol, scopolamine and the like; hypnotism and the polygraph.The Untouchable|Stephen A. Kallis
Either your girl's mistaken or Van Dellen and his polygraph tech and I were taken in by a brand-new technique.The Syndic|C.M. Kornbluth
Did he suggest that he had been asked before to take a polygraph?Warren Commission (7 of 26): Hearings Vol. VII (of 15)|The President's Commission on the Assassination of President Kennedy
It is an interpretation made by human beings of what the machine, the polygraph, shows.
Word Origin for polygraph
1794, "mechanical device for making multiple copies of something written or drawn," from Greek polygraphos "writing much," from polys "much" (see poly-) + graphos "writing," from graphein "to write" (see -graphy).
Meaning "instrument for recording several pulsations of the body at the same time" is 1871; first used as a lie detector 1921. Related: Polygraphy (1590s); polygraphic (1771).