Wiktionary
Usage examples of "polygraphs".
House of Representatives, Committee on the Judiciary, Subcommittee on Civil and Constitutional Rights, Presidential Directive on the Use of Polygraphs and Prepublication Review, 89th Cong.
I added that the Ramseys genuinely seemed to want to talk extensively to the police, but the attorneys were concerned that the chief wanted them polygraphed, even though polygraphs were not admissible in court in Colorado.
I explained that my unit and I had never set much store in polygraphs and considered them more in the realm of interrogation techniques than anything else.
House of Representatives, Committee on the Judiciary, Subcommittee on Civil and Constitutional Rights, Presidential Directive on the Use of Polygraphs and Prepublication Review, Hearings, 98th Cong.
They had a polygraph examination that Bill Durham said Damien had flunked, but polygraphs are considered too unreliable to be admissible in court.