ENTROPY

randomness, entropy

(noun) (thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work; “entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity”

information, selective information, entropy

(noun) (communication theory) a numerical measure of the uncertainty of an outcome; “the signal contained thousands of bits of information”

Source: WordNet® 3.1

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Etymology

Noun

entropy (countable and uncountable, plural entropies)

(thermodynamics, countable)

strictly thermodynamic entropy. A measure of the amount of energy in a physical system that cannot be used to do work.

A measure of the disorder present in a system.

The capacity factor for thermal energy that is hidden with respect to temperature .

The dispersal of energy; how much energy is spread out in a process, or how widely spread out it becomes, at a specific temperature.

(statistics, information theory, countable) A measure of the amount of information and noise present in a signal.

(uncountable) The tendency of a system that is left to itself to descend into chaos.

Synonyms

• anergy

• bound entropy

• disgregation

Antonyms

• aggregation

• exergy

• free entropy

• negentropy

Anagrams

• Poynter, peryton

Source: Wiktionary

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En"tro*py, n. Etym: [Gr. (Thermodynamics)

Definition: 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 . 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.

Source: Webster’s Unabridged Dictionary 1913 Edition

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