# Definitions and Synonyms of *entropy* | Another word for *entropy* | What is *entropy? *

*Definition 1: (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work - [noun denoting attribute]*

*Samples where entropy or its synonyms are used according to this definition*

*entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity*

*Synonyms for entropy in the sense of this definition*

*(**entropy* is a kind of ...) any property used to characterize matter and energy and their interactions

*entropy*is a kind of ...) any property used to characterize matter and energy and their interactions

*(... is a kind of **entropy* ) entropy calculated from the probability that a state could be reached by chance alone

*entropy*) entropy calculated from the probability that a state could be reached by chance alone

*(entropy* belongs to category ...) the branch of physics concerned with the conversion of different forms of energy

## Definition 2: (communication theory) a numerical measure of the uncertainty of an outcome - [noun denoting attribute]

### Samples where entropy or its synonyms are used according to this definition

*the signal contained thousands of bits of information*

### Synonyms for entropy in the sense of this definition

### (*entropy* is a kind of ...) a system of measurement of information based on the probabilities of the events that convey information

### (entropy belongs to category ...) the discipline that studies the principles of transmiting information and the methods by which it is delivered (as print or radio or television etc.)

*"communications is his major field of study"*