ammeter

[am-mee-ter]

noun Electricity.

an instrument for measuring current in amperes.

Origin of ammeter

First recorded in 1880–85; am(pere) + -meter

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for ammeter

Historical Examples of ammeter

Ammeter should show three to five amperes charge with lamps burning.
The Automobile Storage Battery
O. A. Witte
Each circuit is provided with a separate rheostat and ammeter.
The Automobile Storage Battery
O. A. Witte
A relay snapped, and instantly the ammeter jumped to read 4500 amperes.
Islands of Space
John W Campbell
They were all up to capacity, save the ammeter from the coils.
Invaders from the Infinite
John Wood Campbell
The voltmeter cost $7, and the ammeter $10; and the switches and fuses could be had for $5.
Electricity for the farm
Frederick Irving Anderson

British Dictionary definitions for ammeter

ammeter

noun

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.

ammeter in Science

ammeter

[ăm′mē′tər]

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.