Dictionary > Calorie

Calorie

Definition
noun, plural: calories
(1) Gram calorie: unit of heat energy that is equal to the amount of heat needed to raise the temperature of 1 gram of water by 1 degree Centigrade at 1 atmospheric pressure.
(2) Kilocalorie: a measure of heat energy that is equal to the amount of heat needed to raise the temperature of one kilogram of water by one degree Centigrade at one atmospheric pressure.
Supplement
Calories are used to describe the energy-producing potential of food. A one gram calorie is equal to 4.1840 joules. Joule (which is an SI unit) is now more preferred over calorie (which is nonSI unit) for measuring heat energy.
Word origin: from Latin calor, heat
Abbreviation: cal (gram calorie) or kcal (kilocalorie)
Variant: calory
Related terms:


You will also like...

takahē
Takahē (Porphyrio hochstetteri)

Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..

Peppered moth ("Biston betularia") melanic and light form
Examples of Natural Selection

Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..

Digestion and Absorption of Food
Digestion and Absorption of Food

The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..

genes controlling growth and development
Control of Growth & Development

Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..

Lotic community of algal species
Lotic Communities & Algae

Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..

Biological Cell Defense
Biological Cell Defense

Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..