• synonyms


[koo-lom-i-ter, kuh-]
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noun Electricity.
  1. voltameter.
Also cou·lomb·me·ter [koo-lom-mee-ter, -lohm-] /ˈku lɒmˌmi tər, -loʊm-/.

Origin of coulometer

First recorded in 1900–05; coulo(mb) + -meter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for coulometer


coulombmeter (ˈkuːlɒmˌmiːtə)

  1. an electrolytic cell for measuring the magnitude of an electric charge by determining the total amount of decomposition resulting from the passage of the charge through the cellAlso called: voltameter
Derived Formscoulometric (ˌkuːləˈmɛtrɪk), adjectivecoulometry, noun

Word Origin

C19: from coulomb + meter ³
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

coulometer in Science


[kōō-lŏmĭ-tər, kōōlə-mē′tər]
  1. A device for determining the amount of a substance released during electrolysis by measuring the electrical charge that results from the electrolysis. Coulometers can be used to detect and measure trace amounts of substances such as water.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.