Definition of kilocalorie in US English:



  • A unit of energy of 1,000 calories (equal to 1 large calorie).

    • ‘In scientific terms, 1 calorie is a kilocalorie, which is the amount of energy required to raise 1 gram of water 1 degree Celsius.’
    • ‘In the United States, energy is expressed in kilocalories or megacalories (Mcal).’
    • ‘In nearly half of these African countries, the undernourished are getting 300 kilocalories less than what they need to be healthy.’
    • ‘The units typically used for heats of sublimation are kilojoule per mole or kilocalories per mole.’
    • ‘For most people, a daily diet containing 2000 calories of energy (actually 2000 kilocalories, but never mind) is about right.’