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  1. Oxford American Dictionary

    calorie

    • IPA[ˈkal(ə)rē]

    美式

    • n.
      a unit of energy equivalent to the heat energy needed to raise the temperature of 1 gram of water by 1 °C (now often defined as equal to 4.1868 joules).；a unit of energy, often used to express the nutritional value of foods, equivalent to the heat energy needed to raise the temperature of 1 kilogram of water by 1 °C, and equal to one thousand small calories; a kilocalorie.

    • noun: calorie, plural noun: calories