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voltmeter

[ vohlt-mee-ter ]
/ ˈvoʊltˌmi tər /
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noun Electricity.

a calibrated instrument for measuring the potential difference between two points.

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Origin of voltmeter

First recorded in 1880–85; volt1 + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for voltmeter

voltmeter
/ (ˈvəʊltˌmiːtə) /

noun

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

Scientific definitions for voltmeter

voltmeter
[ vōltmē′tər ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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