calorie

Etymology

Borrowed from French calorie, formed from Latin calor. It was originally defined as the large calorie in the early 19th century, with the small calorie being defined some decades later.

noun

1. (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.
   Biotics possess extraordinary abilities, but they must live with minor inconveniences. The most obvious issue is getting adequate nutrition. Creating biotic mass effects takes such a toll on metabolism that active biotics develop ravenous appetites. The standard Alliance combat ration for a soldier is 3000 calories per day; biotics are given 4500, as well as a canteen of potent energy drink for quick refreshment after hard combat. 2008, BioWare, Mass Effect (Science Fiction), Redwood City: Electronic Arts, →OCLC, PC, scene: Biotics: Life as a Biotic Codex entry
   Mostly, the microbiome is beneficial. It helps with digestion and enables people to extract a lot more calories from their food than would otherwise be possible. Research over the past few years, however, has implicated it in diseases from atherosclerosis to asthma to autism. 2013-06-29, “A punch in the gut”, in The Economist, volume 407, number 8842, pages 72–3
2. (physics, chemistry, 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.