• synonyms


[mil-ee-am-peer, -am-peer]
noun Electricity.
  1. a unit of electric current equal to one thousandth of an ampere. Abbreviation: mA
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Origin of milliampere

From French, dating back to 1890–95; see origin at milli-, ampere
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for milliampere

Historical Examples

  • The current required to produce electrolysis is very small, about one milliampere being sufficient.

    Wireless Transmission of Photographs

    Marcus J. Martin

  • Its sensibility ought to be such that it is actuated by a tenth of a milliampere, and, if possible, even by less.

milliampere in Medicine


  1. A unit of current that is equal to one thousandth (10-3) of an ampere.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.