# Definition of Entropy. Meaning of Entropy. Synonyms of Entropy

Here you will find one or more explanations in English for the word Entropy. Also in the bottom left of the page several parts of wikipedia pages related to the word Entropy and, of course, Entropy synonyms and on the right images related to the word Entropy.

## Definition of Entropy

Entropy
Entropy En"tro*py, n. [Gr. ? a turning in; ? in + ? a turn, fr. ? to turn.] (Thermodynamics) A certain property of a body, expressed as a measurable quantity, such that when there is no communication of heat the quantity remains constant, but when heat enters or leaves the body the quantity increases or diminishes. If a small amount, h, of heat enters the body when its temperature is t in the thermodynamic scale the entropy of the body is increased by h ? t. The entropy is regarded as measured from some standard temperature and pressure. Sometimes called the thermodynamic function. The entropy of the universe tends towards a maximum. --Clausius.

## Meaning of Entropy from wikipedia

- In statistical mechanics, entropy is an extensive property of a thermodynamic system. It is closely related to the number Ω of microscopic configurations...
- Information entropy is the average rate at which information is produced by a stochastic source of data. The measure of information entropy ****ociated...
- thermodynamics states that the total entropy of an isolated system can never decrease over time. The total entropy of a system and its surroundings can...
- In information theory, the cross entropy between two probability distributions p {\displaystyle p} and q {\displaystyle q} over the same underlying set...
- and numerous other fields. A key measure in information theory is "entropy". Entropy quantifies the amount of uncertainty involved in the value of a random...
- maximum entropy states that the probability distribution which best represents the current state of knowledge is the one with largest entropy, in the...
- in the following categories: Thermodynamic entropy Entropy and information Quantum mechanical entropy Entropy, in thermodynamics, is a state function originally...
- and occurs in Planck's law of black-body radiation and in Boltzmann's entropy formula. It is the gas constant R divided by the Avogadro constant NA:...
- theoretical analogs. Maximum entropy may refer to: Maximum entropy thermodynamics The Law of maximum entropy production Maximum entropy spectral estimation The...
- inspired by black hole thermodynamics, which conjectures that the maximal entropy in any region scales with the radius squared, and not cubed as might be...