1. (

• Calorie ,
• kilogram_calorie ,
• kilocalorie ,
• large_calorie ,
• nutritionist's_calorie

) 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 ;

2. (

• calorie ,
• gram_calorie ,
• small_calorie

) 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 ;