Kilowatt n. : One thousand watts.

Example:
How many Kilowatt hours of energy would be produced by the complete conversion to energy of .797mg of matter?

Taxonomy
watt, megawatt, MW, Kilowatt, power, quadrillion watts, the International, energy, nanowatt, gigawatt, terawatt, electrical, kilowatt-hours, power plants, watt bulb, free encyclopedia, Symbol, speed.

Defination from the web:
kilowatt-hour, or 360 kJ. ... A power station would be rated in watts, but its annual energy sales would be in watt-hours (or kilowatt-hours or megawatt-hours) ...