wattmeter

[wot-mee-ter]

noun Electricity.

a calibrated instrument for measuring electric power in watts.

Origin of wattmeter

First recorded in 1885–90; watt + -meter

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

Examples from the Web for wattmeter

Historical Examples of wattmeter

We will now take the reading of the wattmeter, note the time and read it again later.
The Library of Work and Play: Electricity and Its Everyday Uses
John F. Woodhull
I will now take you to see the wattmeter which measures all the electric energy used in this building.
The Library of Work and Play: Electricity and Its Everyday Uses
John F. Woodhull
We counted the revolutions of the wattmeter and found them to be sixty per minute.
The Library of Work and Play: Electricity and Its Everyday Uses
John F. Woodhull

British Dictionary definitions for wattmeter

wattmeter

noun

a meter for measuring electric power in watts

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