An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

A unit of energy equivalent to one kilowatt (1 kW) of power expended for one hour (1 h) of time. The kilowatt-hour is not a standard unit in any formal system, but it is commonly used to measure the consumption of electrical energy. To convert to → joules, use: 1 kWh = 3.6 × 10⁶ J = 3.6 × 10¹³→ ergs.

→ kilo-; → watt-hour.

A unit of power in the SI or MKS system of units, symbol W, equivalent to one joule per second. 1 W = 1 J s^-1 = 1 kg m² s^-3 = 1 N m s^-1 = 10⁷ erg s^-1.
Electricity: The current in amperes multiplied by the electrical potential in volts.

In honor of James Watt (1736-1819) the eminent Scottish inventor and mechanical engineer.

Unit of work or energy, equal to one watt for one hour, or 3.6 x 10¹⁰ ergs., or 3600 joules. The kilowatt-hour (kWh), i.e. 1,000 watts over the period of one hour, is the usual unit or measure of electricity supply or consumption. 1 kWh = 3.6 x 10⁶ J.

→ watt; → hour.

A fleshy lobe or appendage hanging down from the throat or chin of certain birds, as the domestic chicken or turkey (Dictionary.com).

Of uncertain origin.

Jil (in Nâini and Baxtiyâri) "wattle."

An instrument used for measuring the magnitude of the power in an electric circuit.

→ watt; → -meter.