simple past tense and past participle of polygraph

A device which measures and records several physiological variables such as blood pressure, heart rate, respiration and skin conductivity while a series of questions is being asked to a subject, in an attempt to detect lies.

(transitive) To administer a polygraph test to.

Polygraphic.

Pertaining to, relating to polygraphy / Done or made with a polygraph

A person skilled in the operation of a polygraph.

plural of polygrapher

plural of polygraph

Third-person singular simple present indicative form of polygraph

present participle of polygraph