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 heat needed to raise the temperature of 1 gram of water by 1°C
the kilocalorie, kilogram calorie or large calorie. A unit of energy 1,000 times larger than the normal calorie. It is equivalent to approximately 4.2 kilojoules
A unit of heat originally defined as the amount of heat required to raise the temperature of 1 gram of water through 1° C (the gram-calorie or small calorie)
currently the most common unit for measuring heat and soon to be replaced by joules (J) The calorie is the amount of energy required to raise the temperature of one cubic centimeter of water one degree Celsius (formerly called centigrade) The calorie is from the Latin word "calor" meaning "heat " It is equivalent to 4 185 joules) It is important not to confuse the word calorie (small c) with Calorie (capital C) A Calorie (or kilocalorie) describes the available energy in food It is the amount of heat required to raise the temperature of 1,000 grams (Kilogram) of water by 1 degree Celsius Physicist Paul Hewitt put it this way: "To the weight watcher, the peanut contains 10 Calories To the physicist, it releases 10,000 calories (or 41,850 joules) of energy when burned or digested " [return to top]
term applicable either to the gram calorie or the kilocalorie The gram calorie is defined as the amount of heat required at a pressure of one atmosphere to raise the temperature of one gram of water one degree Celsius at 15°C The kilocalorie is the unit used to express the energy value of food; it is defined as the amount of heat required at a pressure of one atmosphere to raise the temperature of one kilogram of water one degree Celsius; it is equal to 1000 gram calories See energy
Unit used in measuring the energy of heat or chemical energy A "small" calorie is the heat needed to warm up one gram of water by 1 degree centigrade and equals about 4 18 joule A "kilocalorie" or "big calorie" equals 1000 calories and is the unit usually used in describing the energy content of food
(abbrev cal; pl calories; also small calorie) 1 A unit of energy content of food One calorie equals 4 187 joules or 0 003969 Btu 2 The amount of energy needed to raise the temperature of one gram of water one degree Celsius
Calories are units used to measure the energy value of food. People who are on diets try to eat food that does not contain many calories. A glass of wine does have quite a lot of calories. calorie controlled diets. see also -calorie. Unit of energy or heat. Various precise definitions are used for different purposes (physical chemistry measurements, engineering steam tables, and thermochemistry), but in all cases the calorie is about 4.2 joules, the amount of heat needed to raise the temperature of 1 g of water by 1 °C (1.8 °F) at normal atmospheric pressure. The calorie used by dietitians and food scientists and found on food labels is actually the kilocalorie (also called Calorie and abbreviated kcal or Cal), or 1,000 calories. It is a measure of the amount of heat energy or metabolic energy contained in the chemical bonds (see bonding) of a food
The unit of heat according to the French standard; the amount of heat required to raise the temperature of one kilogram (sometimes, one gram) of water one degree centigrade, or from 0° to 1°
unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure a unit of heat equal to the amount of heat required to raise the temperature of one kilogram of water by one degree at one atmosphere pressure; used by nutritionists to characterize the energy-producing potential in food
A unit of heat originally defined as the amount of heat required to raise the temperature of water through one degree centigrade (the gram-calorie or small calorie), but this proved to be insufficiently precise The 15° gram-calorie (cal15) is the amount of heat required to raise the temperature of one gram of water from 14 5° to 15 5°C, and is equal to 4 1855 joules The kilogram calorie or large calorie (Kcal, kg-cal, or Cal) is 1,000 times as large as a calorie
a unit of heat equal to the amount of heat required to raise the temperature of one kilogram of water by one degree at one atmosphere pressure; used by nutritionists to characterize the energy-producing potential in food
Metric thermal unit: a measure of heat energy; the amount needed to raise the temperature of one kilogram of water by one degree Centigrade This is the large Calorie (used relating to food energy content) definition The small calorie of fuel research is the amount of energy needed to raise the temperature of one gram of water by one degree Centigrade
The amount of heat required to raise the temperature of a unit of water, at or near the temperature of maximum density, one degree Celsius (or Centigrade [C]); expressed as a "small calorie" (the amount of heat required to raise the temperature of 1 gram of water one degree C), or as a "large calorie" or "kilogram calorie" (the amount of heat required to raise one kilogram [1,000 grams] of water one degree C); capitalization of the word calorie indicates a kilogram-calorie
1 The amount of heat required to raise the temperature of 1 gram of water 1°C, at or near the temperature of maximum density This unit is called a "small calorie", or "gram calorie " 2 The amount of heat required to raise the temperature of 1 kilogram of water 1°C This unit is called a "large calorie" or "kilogram-calorie "
(cal) the amount of energy required to raise the temperature of one gram of water one degree Celsius at 50°C, or 4 1855 joules Note that the large calorie (Cal) is the amount of energy required to raise one kilogram of water one degree Celsius; that is, 1 Cal = 1000 cal To confuse matters, dietary Calories are almost never capitalized as they should be, and are often mistaken for calories
A calorie is the amount of energy required to raise the temperature of one milliliter (ml) of water at a standard initial temperature by one degree centigrade (C)