Calorie, kilogram calorie, kilocalorie, 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)
calorie, gram calorie, small 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)
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