[am-per-ij, am-peer-]

noun Electricity.

the strength of an electric current measured in amperes. Abbreviation: amp.

Origin of amperage

First recorded in 1890–95; ampere + -age Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for amperage

Historical Examples of amperage

  • The amperage, on the other hand, is that of the six cells combined, or 150.


    James Slough Zerbe

  • Voltage, amperage, and watt or kilowatt are the terms in common use.

  • The name plates on electric motors indicate the amperage at full load.

  • Then he defines the wave-form, voltage, and amperage entering the circuit and defines whatever is coming out.

    With No Strings Attached

    Gordon Randall Garrett (AKA David Gordon)

  • Then the voltage is lowered to a suitable rate, and the amperage raised in proportion, by special machinery, at the point of use.

    Electricity for the farm

    Frederick Irving Anderson

British Dictionary definitions for amperage



the magnitude of an electric current measured in amperes, esp the rated current of an electrical component or device
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 amperage

strength of an electric current, 1889, from ampere on model of voltage.

Online Etymology Dictionary, © 2010 Douglas Harper