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[vohlt-am-peer, -am-peer]
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noun Electricity.
  1. an electric measurement unit, equal to the product of one volt and one ampere, equivalent to one watt for direct current systems and a unit of apparent power for alternating current systems. Abbreviation: VA

Origin of volt-ampere

First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for voltampere


  1. the product of the potential in volts across an electrical circuit and the resultant current in amperesAbbreviation: VA
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

voltampere in Medicine


  1. A unit of electrical power equivalent to 1 watt or one thousandth (10-3) of a kilowatt.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

voltampere in Science


  1. A unit of electric power equal to the product of one volt and one ampere, equivalent to one watt.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.