Calorie - Dictionary Definition and Overview

Calorie :  (noun)
1: 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 [syn: gram calorie, small calorie]
2: 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, kilogram calorie, kilocalorie, large calorie, nutritionist's calorie]

Based on WordNet 2.0

Calorie : \Cal"o*rie\, n. [F., fr. L. calor heat.] (Physics) The unit of heat according to the French standard; the amount of heat required to raise the temperature of one kilogram (sometimes, one gram) of water one degree centigrade, or from 0[deg] to 1[deg]. Compare the English standard unit, Foot pound.

Based on Webster's Revised Unabridged Dictionary

Calorie :  Calorie: A unit of food energy. In nutrition terms, the word calorie is used instead of the more precise scientific term kilocalorie which represents the amount of energy required to raise the temperature of a liter of water one degree centigrade at sea level. The common usage of the word calorie of food energy is understood to refer to a kilocalorie and actually represents, therefore, 1000 true calories of energy. A calorie is also known as cal, gram calorie, or small calorie.

Based on University of Miami School of Medicine [Medical_Dictionary]:

Calorie :  The amount of heat required to raise the temperature of one gram of water from 14.5°C to 15.5°C. 1 calorie = 4.184 joules.

Based on University of Miami School of Medicine [Medical_Dictionary]:
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