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Definition of Calorie

Calorie: A unit of food energy. The word calorie is ordinarily used instead of the more precise, scientific term kilocalorie. A kilocalorie represents the amount of energy required to raise the temperature of a liter of water 1' centigrade at sea level. Technically, a kilocalorie represents 1,000 true calories of energy.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=8567
Last Editorial Review: 3/19/2012

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