Kilocalorie (kcal)
Kilocalorie (kcal) :
An ambiguous metric unit of energy. The ambiguity arises because there are two "calories" in common use, identified in this dictionary as the calorie (the small or gram calorie equal to 4.1868 kilojoules) and the Calorie (the large or kilogram calorie equal to 4.1868 megajoules). The term kilocalorie properly means 1000 calories, which is the same as 1 Calorie. In other words, "kilocalorie" is the correct name for the unit known in nutrition simply as the "calorie."
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