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[vohlt-mee-ter] /ˈvoʊltˌmi tər/
noun, Electricity.
a calibrated instrument for measuring the potential difference between two points.
Origin of voltmeter
First recorded in 1880-85; volt1 + -meter Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for voltmeter


an instrument for measuring potential difference or electromotive force
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for voltmeter

1882, from volt + meter (n.3).

Online Etymology Dictionary, © 2010 Douglas Harper
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voltmeter in Science
An instrument used for measuring the difference in voltage between two points in an electric circuit. Voltmeters typically make use of an ammeter that measures current flow across a known resistance inside the voltmeter; direct-current voltages can then be determined by Ohm's law. Digital voltmeters employ A/D converters to provide the numerical value of the voltage displayed. Compare ohmmeter.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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