Adjacent Words

watt definitions

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WordNet (r) 3.0 (2005)

n
1: 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 [syn: watt, W]
2: Scottish engineer and inventor whose improvements in the steam engine led to its wide use in industry (1736-1819) [syn: Watt, James Watt]

Merriam Webster's

noun Etymology: James Watt died 1819 Date: 1882 the absolute meter-kilogram-second unit of power equal to the work done at the rate of one joule per second or to the power produced by a current of one ampere across a potential difference of one volt ; 1/746 horsepower

Merriam Webster's

biographical name James 1736-1819 Scottish inventor

Oxford Reference Dictionary

n. the SI unit of power, equivalent to one joule per second, corresponding to the rate of energy in an electric circuit where the potential difference is one volt and the current one ampere. Usage: Symb.: W. Phrases and idioms: watt-hour the energy used when one watt is applied for one hour. Etymology: J. Watt, Sc. engineer d. 1819

Webster's 1913 Dictionary

Watt Watt, n. [From the distinguished mechanician and scientist, James Watt.] (Physics) A unit of power or activity equal to 10^7 C.G.S. units of power, or to work done at the rate of one joule a second. An English horse power is approximately equal to 746 watts.

Collin's Cobuild Dictionary

(watts) A watt is a unit of measurement of electrical power. Use a 3 amp fuse for equipment up to 720 watts. ...a 100-watt lightbulb. N-COUNT: usu num N