- watt, W - a unit of power equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a resistance of 1 ohm
--1 is a kind of power unit
--1 is a part of kilowatt, kW; horsepower, HP, H.P.
--1 has parts: milliwatt - Watt, James Watt - Scottish engineer and inventor whose improvements in the steam engine led to its wide use in industry (1736-1819)
--2 is a kind of engineer, applied scientist, technologist; inventor, discoverer, artificer