The word “calorie” is defined as a unit of energy or energy that can increase the temperature of 1 litre of water to 1 degree Celsius. Food nutrients as fat (lipids) contains 9 kilocalories per gram (kcal/g), while carbohydrate (sugar) or protein contains approximately 4 kcal/g. Already in 1928 there were serious complaints about the possible confusion arising from the two main definitions of the calorie and whether the notion of using the capital letter to distinguish them was sound. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. In the majority of other countries, nutritionists prefer the kilojoule to the kilocalorie. calorie: 1 n 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 Synonyms: gram calorie , small calorie Type of: energy unit , heat unit , work unit a unit of measurement for work A current of 1 ampere maintained for 1 second in a … 1 small kilocalorie (kcal) is equal to 1000 small calories (cal): 1 kcal = 1000 cal . Calorie Definition from Science & Technology Dictionaries & Glossaries. Not to be confused with the food Calorie (capital C), which is equal to 1 kilocalorie (1000 calories), or the amount of energy required to raise one kilogram of water by one degree Celsius. to burn calories definition in the English Cobuild dictionary for learners, to burn calories meaning explained, see also 'burn out',burn up',burn down',burn off', English vocabulary Accessed 24 Jan. 2021. a unit equal to the amount of heat needed to increase the temperature of … Until 1948, the latter was defined as 4.1833 international joules; the current standard of 4.184 J was chosen to have the new thermochemical calorie represent the same quantity of energy as before. Accordingly, several different precise definitions of the calorie have been used. calorie noun [C] (FOOD) a unit of energy, often used as a measurement of the amount of energy that food provides: There are about 50 calories in an apple. [15][16] The word calorie is commonly used with the number of kilocalories (kcal) of nutritional energy measured. [17] US food labelling laws require the use of kilocalories (under the name of "Calories"); kilojoules are permitted to be included on food labels alongside kilocalories, but most food labels do not do so. From the Latin calor (heat), a calorie is a specific amount of heat energy. 1 calorie nutrition facts and nutritional information. The calorie is a unit of energy defined as the amount of heat needed to raise a quantity of water by one degree of temperature. See the full definition for calorie in the English Language Learners Dictionary, — called also kilocalorie, kilogram calorie, large calorie, Nglish: Translation of calorie for Spanish Speakers, Britannica English: Translation of calorie for Arabic Speakers, Britannica.com: Encyclopedia article about calorie. A measure of heat, equal to the amount of energy required to raise one gram of water by one degree Celsius. calorie (cal): The calorie (symbolized cal) is a unit of heat occasionally used in the centimeter-gram-second ( cgs ) system of physical units. The word calorie is ordinarily used instead of the more precise, scientific term kilocalorie. [24] However, its use is being superseded by the SI unit, the joule, and multiples thereof such as the kilojoule. This answer is not useful. Definition of calorie noun in Oxford Advanced Learner's Dictionary. Send us feedback. “Calorie.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/calorie. The debate boils down to whether a… 'Nip it in the butt' or 'Nip it in the bud'. 1 small kilocalorie (kcal) is equal to 1 large food calorie (Cal): 1 kcal = 1 Cal. Calorie Definition In Hindi, in the context of medicine, health, or physical fitness, refers to a reduction of the total body mass, due to a mean loss of fluid, body fat or adipose tissue or lean mass, namely bone mineral deposits, muscle, tendon, and other connective tissue. One calorie is defined as exactly 4.184 J, and one Calorie (kilocalorie) is 4184 J. ≈ 0.003964 BTU ", "Calories - Fat, Protein, Carbohydrates, Alcohol. Definition of calorie. ≈ 2.6132×1019 eV, ≈ 0.0039683 BTU This page was last edited on 10 January 2021, at 11:15. Dictionary ! The reason for defining a specific starting point is to remove any doubt of how much energy 1 calorie is. No one disagrees about the basic definition of a calorie. In the past, a bomb calorimeter was used to determine the energy content of food by burning a sample and measuring a temperature change in the surrounding water. Menu. In Australia, kilojoules are officially preferred over kilocalories, but kilocalories retain some degree of popular use. [6] Berthelot also introduced the convention of capitalizing the kilogram-calorie, as Calorie. ≈ 2.610×1019 eV, ≈ 0.003971 BTU French calorie, from Latin calor heat, from calēre to be warm — more at lee. ≈ 1.164×10−6 kW⋅h It is also occasionally used to specify energy quantities that relate to reaction energy, such as enthalpy of formation and the size of activation barriers. 1 a unit for measuring how much energy food will produce A fried egg contains about 100 calories—about the same as you would burn off if you ran a mile. [23] Typically, this use was largely due to the ease with which it could be calculated in laboratory reactions, especially in aqueous solution: a volume of reagent dissolved in water forming a solution, with concentration expressed in moles per litre (1 litre weighing 1 kilogram), will induce a temperature change in degrees Celsius in the total volume of water solvent, and these quantities (volume, molar concentration and temperature change) can then be used to calculate energy per mole. The calorie was originally defined as the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1 gram of water 1° Celsius. Definition of calorie in the Definitions.net dictionary. Defined as 1.163 mW⋅h = 4.1868 J exactly. General Chemistry Glossary. Slippery Words Quiz—Changing with the Times. Today, this method is not commonly used in the United States and has been replaced by calculating the energy content indirectly from adding up the energy provided by energy-containing nutrients of food (such as protein, carbohydrates, and fats), the Modified Atwater system. In other scientific contexts, the term calorie almost always refers to the small calorie. The definition depends on the atmospheric pressure and the starting temperature. The energy in kilojoules E (kJ) is equal to 4.184 times the energy in thermochecmical / food kilocalories E (kcal): E (kJ) = 4.184 × E (kcal-th) International kilocalories to kilojoules. The modern (small) calorie is defined as the amount of energy needed to increase the temperature of 1 gram of water by 1 °C (or 1 K, which is the same increment). One calorie is equivalent to exactly 4.184 J. For historical reasons, two main definitions of calorie are in wide use. 2. ≈ 2.615×1019 eV, ≈ 0.0039683 BTU high in calories: a caloric meal. The calorie used in chemistry and biochemistry is equal to 4.184 joules. • Until recently it had always been assumed that all calories are the same, regardless of where they came from. A Calorie (kilocalorie) is 1000 calories. The modern calorie (cal) was first recognized as a unit of the cm-g-s system (cgs) in 1896,[6] noun plural -ries a unit of heat, equal to 4.1868 joules (International Table calorie): formerly defined as the quantity of heat required to raise the temperature of 1 gram of water by 1°C under standard conditions. 1 kcal IT = 4.1868 kJ any of several units of heat defined as the amount of heat required to raise the temperature of 1 kilogram of water by 1 degree Celsius (1°C) at a specified temperature. This definition was adopted by the Fifth International Conference on Properties of Steam (London, July 1956). This answer is useful. [22] Food nutrients are also often quoted "per 100 g". 1. (The word calorie is used instead of the more precise scientific term kilocalorie.) alongside the already-existing cgs unit of energy, the erg (first suggested by Clausius in 1864, under the name ergon, and officially adopted in 1882). Accordingly, several different precise definitions of the calorie have been used. ≈ 1.1626×10−6 kW⋅h A kilocalorie represents the amount of energy required to raise the temperature of a liter of water 1' centigrade at sea level. Calorie: A unit of food energy. 1. 1 kcal th = 4.184 kJ. [1][2] The use of the kilogram-calorie (kcal) for nutrition was introduced to the American public by Wilbur Olin Atwater, a professor at Wesleyan University, in 1887.[3]. [18] Australian and New Zealand food labelling laws require the use of kilojoules; kilocalories are allowed to be included on labels in addition to kilojoules, but are not required. Say it The amount of heat required to raise the temperature of 1 g of water at 14.5°C to 15.5°C. Calories are units of energy so small that a tiny cookie can provide thousands of them. Even though it is not an SI unit, it is still used in chemistry. In a nutritional context, the kilojoule (kJ) is the SI unit of food energy, although the calorie is commonly used. 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. [3][6] — called also gram calorie, small calorie. The term entered French and English dictionaries between 1841 and 1867. ≈ 1.168×10−6 kW⋅h The amount of energy required to warm one gram of air-free water from 3.5 to 4.5 °C at standard atmospheric pressure. In the United States, most nutritionists prefer the unit kilocalorie to the unit kilojoules, whereas most physiologists prefer to use kilojoules. This produces energy or heat, which our body uses for our daily tasks as fuel. [1][2] The large calorie, food calorie, or kilocalorie (Cal, calorie or kcal), most widely used in nutrition,[3] is the amount of heat needed to cause the same increase in one kilogram of water. To ease calculations, energy is expressed in 1000-calorie units known as kilocalories. [3] The SI unit of energy is the joule. Dictionary ... Calorie A unit of heat equal to the amount of heat needed to raise the temperature of 1,000 grams of water by one degree Celsius. In nutrition terms, the word calorie is commonly used to refer to a unit of food energy. Calorie is a measure of energy and does not measure weight or length. — called also gram calorie, small calorie. By convention in food science, the large calorie is commonly called Calorie (with a capital C by some authors to distinguish from the smaller unit). Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. 1 a : the amount of heat required at a pressure of one atmosphere to raise the temperature of one gram of water one degree Celsius that is equal to about 4.19 joules —abbreviation cal. [5] In most countries, labels of industrialized food products are required to indicate the nutritional energy value in (kilo or large) calories per serving or per weight. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'calorie.' An athlete in training needs a lot of calories. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Show activity on this post. It comes from Latin calor 'heat'. The small calorie or gram calorie (usually denoted cal) is the amount of heat energy needed to raise the temperature of one gram of water by one degree Celsius (or one kelvin). A calorie is the amount of heat needed to raise the temperature of a gram of water by 1°C. One calorie equals 4.18 joules; 1 joule equals 0.000239006 of a calorie. Examples from the Corpus calorie • Carbohydrates contain 3.75 calories per gram whereas fat contains about nine calories. Calories per gram", https://en.wikipedia.org/w/index.php?title=Calorie&oldid=999478124, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License. a low-calorie drink/diet Topic Collocations Diet and Exercise weight. Technically, the calorie was intended to be the amount energy needed to increase the temperature of 1 gram of water by 1 … Calories are a measure of energy. (wikipedia calorie) (physics and chemistry, obsolete ) The gram calorie or small calorie, a non-SI unit of energy, equivalent to approximately 4.2 joules. (of engines) driven by heat. Technically, a kilocalorie represents 1,000 true calories of energy. It is the unit that describes an energy present in a particular amount of food for example. put on/gain/lose weight/a few pounds; watch/control/struggle with your weight; be/become seriously … = 1.1630×10−6 kW⋅h By definition, 1 calorie is the amount of heat required to raise the temperature of 1 gram of water by 1 degree Celsius or 33.8 Fahrenheit. In the labeling of food products in the United States, a food calorie actually refers to a kilocalorie, or 1,000 calories. of or relating to heat. Find calories, carbs, and nutritional contents for 1 calorie and over 2,000,000 other foods at MyFitnessPal.com. Since 1925 this calorie has been defined in terms of the joule, the definition since 1948 being that one calorie is … (cal) A measure of heat energy representing the amount of heat needed to raise the temperature 1 g of water by 1°C. The amount of energy required to warm one gram of air-free water from 19.5 to 20.5 °C at standard atmospheric pressure. 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