What is Calorie?
Calorie definition and meaning on Dictionary terms:
Thermodynamics. Also called gram calorie, small calorie.an amount of heat exactly equal to 4.1840 joules. Abbreviation: cal(usually initial capital letter)kilocalorie. Abbreviation: Cal
Physiology. a unit equal to the kilocalorie, used to express the heat output of an organism and the fuel or energy value of food.a quantity of food capable of producing such an amount of energy.