Calorie: nf A "calorie" is the name commonly given to the large calorie (Cal) or kilo-calorie (Kcal), the "real" calorie (cal) of physicists being a thousand times smaller. A calorie represents the amount of heat needed to heat 1 liter of water from 15 to 16°C (under normal atmospheric pressure). It is also the unit used in nutrition to measure the energy intake of food and the body's needs. The international unit adopted to express this contribution ...
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