noun Electricity.

an instrument for measuring current in amperes.

Nearby words

  1. amity,
  2. amitābha,
  3. amm,
  4. amman,
  5. ammanati,
  6. ammianus,
  7. ammine,
  8. ammino,
  9. ammishaddai,
  10. ammo

Origin of ammeter

First recorded in 1880–85; am(pere) + -meter Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ammeter

British Dictionary definitions for ammeter



an instrument for measuring an electric current in amperes

Word Origin for ammeter

C19: am (pere) + -meter

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

Word Origin and History for ammeter



instrument for measuring the strength of electric currents, 1882, from ampere + -meter.

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for ammeter



An instrument that measures the strength of an electric current, indicating it in amperes. Ammeters typically include a galvanometer; digital ammeters typically include A/D converters as well. Compare ohmmeter voltmeter.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.