- a calibrated instrument for measuring electric power in watts.
Origin of wattmeter
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for wattmeter
We will now take the reading of the wattmeter, note the time and read it again later.
I will now take you to see the wattmeter which measures all the electric energy used in this building.
We counted the revolutions of the wattmeter and found them to be sixty per minute.
- a meter for measuring electric power in watts