watt
UK: wɒt | US: wɑːt
n. a unit of power in the International System of Units (SI), equal to one joule per second.
The word "watt" is derived from the surname of James Watt (1736–1819), a Scottish inventor and mechanical engineer who made significant improvements to the steam engine. The term was adopted in the late 19th century to honor his contributions to the development of power measurement. Unlike many scientific terms, "watt" does not break down into smaller morphemes; it is a monomorphic eponym directly borrowed from a proper noun.
A typical incandescent light bulb uses about 60 watts of power.
The solar panel generates 200 watts under full sunlight.
Energy-efficient appliances often consume fewer watts than older models.
The amplifier's output is rated at 50 watts per channel.
Wattage is calculated by multiplying voltage by current.