ammeter

[am-mee-ter] Origin

am·me·ter

[am-mee-ter]
noun Electricity.
an instrument for measuring current in amperes.

Origin:
1880–85; am(pere) + -meter
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Ammeter is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
Collins
World English Dictionary
ammeter (ˈæmˌmiːtə)
 
n
an instrument for measuring an electric current in amperes
 
[C19: am(pere) + -meter]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

ammeter
instrument for measuring the strength of electric currents, 1882, from am(pere) + meter.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
ammeter   (ām'mē'tər)  Pronunciation Key 
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

ammeter

instrument for measuring either direct or alternating electric current, in amperes. An ammeter can measure a wide range of current values because at high values only a small portion of the current is directed through the meter mechanism; a shunt in parallel with the meter carries the major portion.

Learn more about ammeter with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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