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.


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.

Historical Examples

Bruce of the Circle A Harold Titus
Short Stories of the New America Various
Miss Billy Married Eleanor H. Porter

noun (pl) -ries
a unit of heat, equal to 4.1868 joules (International Table calorie): formerly defined as the quantity of heat required to raise the temperature of 1 gram of water by 1°C under standard conditions. It has now largely been replaced by the joule for scientific purposes cal Also called gram calorie, small calorie Compare Calorie
Also called kilogram calorie, kilocalorie, large calorie. a unit of heat, equal to one thousand calories, often used to express the heat output of an organism or the energy value of food Cal
the amount of a specific food capable of producing one thousand calories of energy



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