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polygraph

nounmasculinetécnico/pu.li.ˈɣɾa.fu/low

po·lí·gra·fo

Definition

An instrument that simultaneously records several physiological functions (such as blood pressure, respiration), commonly used as a 'lie detector'.
The suspect was subjected to a polygraph test.
Polygraph results are considered controversial.
Common collocations
polygraph testpolygraph examinationpolygraph operator

Etymology

Do grego 'polýgraphos', de 'polýs' (muitos) + 'gráphein' (escrever).

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