Polygraph
/ˈpɒl.ɪˌɡræf/noun
An instrument for recording variations in physiological responses, often used in lie detection.
Did you know?The polygraph, or 'many writings', symbolizes the ancient belief in the body as a text revealing hidden truths, echoing a history of mysticism in truth-telling.
Etymological Timeline
Ancient Greek
Greek
πολύγραφος (polygrafos)
“Many written or inscribed.”
17th Century
Latin
polygraphus
“Referring to a device or person capable of writing multiple things.”
19th Century
English
polygraph
“An instrument for measuring multiple physiological responses.”
20th Century
English
lie detector
“A popular term for the polygraph, emphasizing its use in discerning truth from deception.”