entropy

E1N1T1R1O1P3Y4
/ˈɛntɹəpi/

noun

A measure of the disorder directly proportional to the natural logarithm of the number of microstates yielding an equivalent thermodynamic macrostate.

“Near-synonym: unavailable energy”

Less commonScrabble 12

Meanings

nounentropy (countable and uncountable, plural entropies)

plural entropies

  1. A measure of the disorder present in a system.
    1. countableuncountableBoltzmann definitionA measure of the disorder directly proportional to the natural logarithm of the number of microstates yielding an equivalent thermodynamic macrostate.
    2. countableuncountablecomputingShannon entropy
  2. countablenatural sciencesA measure of the amount of energy in a physical system that cannot be used to do work.

    Near-synonym: unavailable energy

    Synonyms: unavailable energy

  3. countableuncountableThe capacity factor for thermal energy that is hidden with respect to temperature.
  4. countableuncountableThe dispersal of energy; how much energy is spread out in a process, or how widely spread out it becomes, at a specific temperature.
  5. countablecomputingA measure of the amount of information and noise present in a signal.
  6. uncountableThe tendency of a system that is left to itself to descend into chaos.

Synonyms & antonyms

nounA measure of the amount of energy in a physical system that cannot be used to do work.

More synonyms by meaning

noun(communication theory) a numerical measure of the uncertainty of an outcome

Similar
informationselective information
Broader
information measure

noun(thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Ancient Greekτροπή“transformation”
  2. GermanEntropie
  3. Englishentropy

First attested in 1867, as the translation of German Entropie, coined in 1865 by Rudolph Clausius in analogy to Energie (“energy”), replacing the root of Ancient Greek ἔργον (érgon, “work”) by Ancient Greek τροπή (tropḗ, “transformation”)).

Full word history & related roots →

Translations

Basque entropia
  • entropiaterm in thermodynamics
Bengali এনট্রপি
  • এনট্রপি (enṭropi)term in thermodynamics
Bulgarian ентро́пия, ентро́пия
  • ентро́пия (entrópija)term in thermodynamics
  • ентро́пия (entrópija)measure of the amount of information in a signal
  • ентро́пия (entrópija)tendency of a system to descend into chaos
Catalan entropia
  • entropiaterm in thermodynamics
Chinese Cantonese 熵
  • 熵 (soeng¹)term in thermodynamics
Chinese Mandarin 熵, 熵
  • 熵 (shāng)term in thermodynamics
  • 熵 (shāng)measure of the amount of information in a signal
  • 熵 (shāng)tendency of a system to descend into chaos
Czech entropie
  • entropieterm in thermodynamics
Danish entropi, entropi
  • entropiterm in thermodynamics
  • entropitendency of a system to descend into chaos
Dutch entropie
  • entropieterm in thermodynamics
Esperanto entropio, entropio
  • entropioterm in thermodynamics
  • entropiomeasure of the amount of information in a signal
Finnish entropia, entropia
  • entropiaterm in thermodynamics
  • entropiameasure of the amount of information in a signal
  • entropiatendency of a system to descend into chaos
French entropie
  • entropieterm in thermodynamics
German Entropie, Entropie
  • Entropieterm in thermodynamics
  • Entropiemeasure of the amount of information in a signal
  • Entropietendency of a system to descend into chaos
Greek εντροπία, εντροπία
  • εντροπία (entropía)term in thermodynamics
  • εντροπία (entropía)measure of the amount of information in a signal
  • εντροπία (entropía)tendency of a system to descend into chaos
Icelandic óreiða
  • óreiðaterm in thermodynamics
Irish eantrópacht
  • eantrópachtterm in thermodynamics
Italian entropia, entropia
  • entropiaterm in thermodynamics
  • entropiameasure of the amount of information in a signal
  • entropiatendency of a system to descend into chaos
Japanese エントロピー, エントロピー
  • エントロピー (entoropī)term in thermodynamics
  • エントロピー (entoropī)measure of the amount of information in a signal
Korean 엔트로피
  • 엔트로피 (enteuropi)term in thermodynamics
Latin entropia, entropia
  • entropiaterm in thermodynamics
  • entropiatendency of a system to descend into chaos
Māori pūngao ngoikore, kaumingomingo
  • pūngao ngoikoreterm in thermodynamics
  • kaumingomingoterm in thermodynamics
Persian آنتروپی
  • آنتروپیterm in thermodynamics
Polish entropia, entropia
  • entropiaterm in thermodynamics
  • entropiameasure of the amount of information in a signal
  • entropiatendency of a system to descend into chaos
Portuguese entropia, entropia
  • entropiaterm in thermodynamics
  • entropiameasure of the amount of information in a signal
  • entropiatendency of a system to descend into chaos
Romanian entropie, entropie
  • entropieterm in thermodynamics
  • entropiemeasure of the amount of information in a signal
  • entropietendency of a system to descend into chaos
Russian энтропи́я, энтропи́я
  • энтропи́я (entropíja)term in thermodynamics
  • энтропи́я (entropíja)measure of the amount of information in a signal
  • энтропи́я (entropíja)tendency of a system to descend into chaos
Spanish entropía, entropía
  • entropíaterm in thermodynamics
  • entropíameasure of the amount of information in a signal
  • entropíatendency of a system to descend into chaos
Tagalog malikusog
  • malikusogterm in thermodynamics
Tamil சிதறம்
  • சிதறம் (citaṟam)term in thermodynamics
Thai เอนโทรปี, เอนโทรปี
  • เอนโทรปี (een-troo-bpii)term in thermodynamics
  • เอนโทรปี (een-troo-bpii)measure of the amount of information in a signal
  • เอนโทรปี (een-troo-bpii)tendency of a system to descend into chaos
Turkish entropi
  • entropiterm in thermodynamics
Ukrainian ентропі́я, ентропі́я
  • ентропі́я (entropíja)term in thermodynamics
  • ентропі́я (entropíja)tendency of a system to descend into chaos
Welsh entropi
  • entropiterm in thermodynamics

Rhymes & wordplay

Anagrams

Cite this entry
APA

entropy. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/entropy

MLA

“entropy.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/entropy. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “entropy,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/entropy.

Source: entropy on Wiktionary, CC BY-SA 4.0.