polygraph

Sinhala Dictionary definitions for polygraph

polygraph 🔊 /pɑˈliˌgɹæˌf/

polygraph : බහු රේඛය

polygraph : නාඩි වැටීම වැනි දෑ කියවිය හැකි යන්ත්‍රය

polygraph definition

Noun.

  1. An instrument for multiplying copies of a writing; a manifold writer; a copying machine.
  2. In bibliography, a collection of different works, either by one or several authors.
  3. An instrument for detecting deceptive statements by a subject, by measuring several physiological states of the subject, such as pulse, heartbeat, and sweating. The instrument records these parameters on a strip of paper while the subject is asked questions designed to elicit emotional responses when the subject tries to deceive the interrogator. Also called lie detector