noun 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.
— synonyms: kilogram_calorie, kilocalorie, large_calorie, nutritionist's_calorie
noun 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.
— synonyms: gram_calorie, small_calorie