# 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

- Entropy is a scientific concept, as well as a measurable physical property that is most commonly ****ociated with a state of disorder, randomness, or uncertainty...
- In information theory, the entropy of a random variable is the average level of "information", "surprise", or "uncertainty" inherent in the variable's...
- thermodynamics establishes the concept of entropy as a physical property of a thermodynamic system. Entropy predicts the direction of spontaneous processes...
- unavailable as a source for useful work. Entropy may also refer to: Entropy (classical thermodynamics), thermodynamic entropy in macroscopic terms, with less emphasis...
- In information theory, the cross-entropy between two probability distributions p {\displaystyle p} and q {\displaystyle q} over the same underlying set...
- Kullback–Leibler divergence, D KL {\displaystyle D_{\text{KL}}} (also called relative entropy), is a measure of how one probability distribution is different from a...
- and electrical engineering. A key measure in information theory is entropy. Entropy quantifies the amount of uncertainty involved in the value of a random...
- In computing, entropy is the randomness collected by an operating system or application for use in cryptography or other uses that require random data...
- entropy states that the probability distribution which best represents the current state of knowledge about a system is the one with largest entropy,...
- The concept entropy was first developed by German physicist Rudolf Clausius in the mid-nineteenth century as a thermodynamic property that predicts that...