Noun | 1. | ![]() unit, unit of measurement - any division of quantity accepted as a standard of measurement or exchange; "the dollar is the United States unit of currency"; "a unit of wheat is a bushel"; "change per unit volume" erg - a cgs unit of work or energy; the work done by a force of one dyne acting over a distance of one centimeter electron volt, eV - a unit of energy equal to the work done by an electron accelerated through a potential difference of 1 volt J, joule, watt second - a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second gram calorie, small calorie, calorie - unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure Calorie, kilocalorie, kilogram calorie, large calorie, nutritionist's calorie - a unit of heat equal to the amount of heat required to raise the temperature of one kilogram of water by one degree at one atmosphere pressure; used by nutritionists to characterize the energy-producing potential in food B.Th.U., British thermal unit, BTU - a unit of heat equal to the amount of heat required to raise one pound of water one degree Fahrenheit at one atmosphere pressure; equivalent to 251.997 calories therm - a unit of heat equal to 100,000 British thermal units watt-hour - a unit of energy equal to the power of one watt operating for one hour B.T.U., Board of Trade unit, kilowatt hour, kW-hr - a unit of energy equal to the work done by a power of 1000 watts operating for one hour foot-pound - a unit of work equal to a force of one pound moving through a distance of one foot foot-ton - 2240 foot-pounds foot-poundal - a unit of work equal to a force of one poundal moving through a distance of one foot horsepower-hour - a unit of work equal to the work done by one horsepower in one hour kilogram-meter - a unit of work equal to the work done by a one kilogram force operating through a distance of one meter |