Home›Browse›K›kilogram caloriekilogram calorieOur editors are putting together more complete content — check back in about 20 minuteskilogram caloriekilogram calorie — nounnoun1. a unit of energy equal to the heat needed to raise 1 kg of water by 1°C1.nounDefinitiona unit of energy equal to the heat needed to raise 1 kg of water by 1°CExampleA kilogram calorie is used in food energy measurements.