1. A unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree Celsius at atmospheric pressure
   "The nutritional label listed the food's energy content in gram calories";
   - calorie, small calorie, cal

Derived forms: gram calories

Type of: energy unit, heat unit, work unit

Part of: Cal, Calorie, kcal, kilocalorie, kilogram calorie, large calorie, nutritionist's calorie

Encyclopedia: Gram calorie