American Heritage® Dictionary of the English Language, Fourth Edition
- n. Any of several approximately equal units of heat, each measured as the quantity of heat required to raise the temperature of 1 gram of water by 1°C from a standard initial temperature, especially from 3.98°C, 14.5°C, or 19.5°C, at 1 atmosphere pressure. Also called gram calorie, small calorie.
- n. The unit of heat equal to 1/100 the quantity of heat required to raise the temperature of 1 gram of water from 0 to 100°C at 1 atmosphere pressure. Also called mean calorie.
- n. The unit of heat equal to the amount of heat required to raise the temperature of 1 kilogram of water by 1°C at 1 atmosphere pressure. Also called kilocalorie, kilogram calorie, large calorie.
- n. A unit of energy-producing potential equal to this amount of heat that is contained in food and released upon oxidation by the body. Also called nutritionist's calorie.
- n. obsolete the gram calorie or small calorie, a non-SI unit of energy, equivalent to approximately 4.2 joules. This unit was widely used in chemistry and physics, being the amount of energy needed to raise the temperature of 1 gram of water by 1 °C.
- n. nutrition kilogram calorie or large calorie. A unit of energy 1000 times larger than the gram calorie. It is equivalent to the gram kilocalorie, approximately 4.2 kilojoules.
- French, from Latin calor, heat; see caloric. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Calories would be disclosed on all menus and menu boards, including menu boards at drive-through locations, with the label "calorie" or "cal," according to the rule.”
“The word calorie has long been intimately associated with dieting.”
“An asterisk pointed to an explanation of the term calorie.”
“Of course you can use the word calorie in a sentence, you know you don't want too many or too few of them -- but what”
“In the context of food energy the term calorie generally refers to the kilogram calorie.”
“But Keane points out that a recent weight-loss study showed a calorie is a calorie, and people can shed pounds on a variety of diets with different nutrient compositions.”
“I put it on MFP though and I am still within calorie limit for today.”
“That's why we're working with industry to bring in calorie information on menus, he said.”
“Another problem that might crop up is if people are using more informal guesstimates, some might try to game the system by being a little dishonest in calorie counts.”
“Little is known, however, about long-term calorie restriction on body temperature.”
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