noun, verb ·Uncommon ·College level
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"It used to be just a plain office with a chair and some instruments on a table. Then they got the new, fancy polygraph system."
"A polygraph consists of an unspecified number of adjacent letters. A polygraph need not be recognisable as a word in a language but if we are attempting to decipher a message which is expected to be in English and we find the heptagraph MEETING it is much more promising than if we find a heptagraph such as DKRPIGX."
"The FBI polygraphed the suspect but learned nothing because they already knew he was lying."
"Would you mind taking a polygraph test?"
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 posed to a subject, in an attempt to detect deception.
Common synonyms include: deception detector, device, examine, lie detector, lie detector controversy, lie detector examination.
Would you mind taking a polygraph test?
Pronounced /ˈpɒliɡɹæf/.
From poly- + -graph.