What is "kilogram calorie"

n. The amount of energy needed to raise the temperature of a kilogram of water by a degree centigrade: (non-gloss definition: a unit of measure of energy.)

n. 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 [syn: Calorie, kilocalorie, large calorie, nutritionist's calorie]