Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • 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.
  • transitive verb To test (a criminal suspect, for example) with a polygraph.

from The Century Dictionary.

  • noun A modified form of sphygmograph by which two or more tracings can be taken simultaneously.
  • noun An instrument for multiplying copies of a writing; a gelatin copying-pad.
  • noun An author of many works.
  • noun A collection of different works written either by one or by different authors; a book containing articles or treatises on different subjects.

from the GNU version of the Collaborative International Dictionary of English.

  • noun An instrument for multiplying copies of a writing; a manifold writer; a copying machine.
  • noun In bibliography, a collection of different works, either by one or several authors.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun 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.
  • noun dated An mechanical instrument for multiplying copies of a writing, resembling multiple pantographs.
  • noun archaic A collection of different works, either by one or several authors.
  • verb To administer a polygraph test.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a medical instrument that records several physiological processes simultaneously (e.g., pulse rate and blood pressure and respiration and perspiration)

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

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