wattmeter
Definitions
General Science
Construction
- A calibrated instrument that measures electric power in watts.
Electronics
- An instrument, such as a watt-hour meter, which measures and indicates electrical power consumption for a given or combined time interval, as expressed in watts or fractions/multiples of watts such as milliwatts or kilowatts. Its abbreviation is WM.
- acronymWM
http://www.dictionarycentral.com/definition/wattmeter.html