Other forms: watts
The watt is the unit of power, used for lamps, engines and heaters. A sixty-watt bulb, two thousand watts, wattage.
One watt is one joule per second. A kilowatt is a thousand watts and a kilowatt-hour is the unit electricity is billed in — a two-kilowatt heater run for an hour uses two of them. LED bulbs are now sold by their equivalent brightness rather than their watts, because the relationship changed entirely. Note wattage; and that the unit is named after James Watt, who improved the steam engine.
1nounwattThe unit of power.
“The old bulb was about sixty watts and the new one is nine.”
watt is a unit of power.
The unit is named after James Watt, the Scottish engineer whose improvements to the steam engine made the industrial revolution practical. He also coined horsepower, which is the unit the watt replaced.
named after James Watt. For the surname, see Watt.
Etymology from Wiktionary, CC BY-SA