Polygraph Definition
pŏlē-grăf
polygraphs
noun
An instrument that measures the physiological responses of an individual to questions from an examiner who interprets the results as indicating the likelihood that the individual is telling or not telling the truth in giving the answers.
American Heritage Medicine
An early device for reproducing writings or drawings.
Webster's New World
An instrument for recording simultaneously changes in blood pressure, respiration, pulse rate, etc., specif. lie detector.
Webster's New World
(dated) An mechanical instrument for multiplying copies of a writing, resembling multiple pantographs.
Wiktionary
(archaic) A collection of different works, either by one or several authors.
Wiktionary
verb
To test (a criminal suspect, for example) with a polygraph.
American Heritage
To test someone with a polygraph.
American Heritage Medicine
Origin of Polygraph
poly- "much" + -graph "writing"
From Wiktionary
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