calorie

calorie
(pl. -ies)
  1. either of two units of heat energy
    卡,卡路里(两个热量单位之一)
    ■(亦作 small calorie)(缩略词: cal)the energy needed to raise the temperature of 1 gram of water through 1 °C (now usually defined as 4.1868 joules)
    小卡(现一般定为4.1868焦耳)
    ■(亦作 large calorie)(缩略词: Cal)the energy needed to raise the temperature of 1 kilogram of water through 1 °C, equal to one thousand small calories and often used to measure the energy value of foods
    大卡,千卡
语源
  1. mid 19th cent.: from French, from Latin calor 'heat' + French suffix -ie (see -y)
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