calorie: Meaning and Definition of

cal•o•rie

1. Also calledgram calorie, small calorie.an amount of heat exactly equal to 4.1840 joules. Abbr.: cal
2. (usually cap.) kilocalorie. Abbr.: Cal
1. a unit equal to the kilocalorie, used to express the heat output of an organism and the fuel or energy value of food.
2. a quantity of food capable of producing such an amount of energy.