What do a.m. and p.m. stand for?


[am-per-ij, am-peer-] /ˈæm pər ɪdʒ, æmˈpɪər-/
noun, Electricity
the strength of an electric current measured in amperes.
Abbreviation: amp.
Origin of amperage
1890-95; ampere + -age Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for amperage
  • Replace any blown fuses with the same voltage and amperage.
  • Also, depending on the amperage of the circuit, charging could take up to six hours.
  • Because the cells in a panel and the panels in a string are wired in series, the amperage of one determines the amperage of all.
  • The confusion here is mistaking a voltage reading for an amperage reading.
  • Arc-blasts occur when powerful, high-amperage currents arc through the air.
  • The result of increasing the voltage will be a decrease in the amperage in the secondary.
  • The heaters sense the amount of amperage flowing through the starter by sensing the heat created by this amperage.
  • Clarified so that load meters that indicate current or amperage being applied to traction motors must be tested.
  • Electrical permits are based upon the service amperage, number of circuits and type of installations.
  • Electrical permits are based upon the service amperage, number of outlets and type of installations.
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
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Word Origin and History for amperage

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

Online Etymology Dictionary, © 2010 Douglas Harper
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