1. (noun)
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 Synonyms: gramcalorie, kilogramcalorie, largecalorie, nutritionist's calorie, smallcalorie, kilocalorie