Word.ws English Dictionary

extropy

extropy noun: negentropy.

Noun

extropy (countable and uncountable, plural extropies)

  1. Negentropy.
    • Extropy uptake, extropy output and entropy production. [...] Jin is the incoming extropy flow, while Jout is the outgoing one. Extropy inflow / outflow is the extropy of the incoming / outgoing material[…]1999, Wolfgang Hofkirchner, The Quest for a Unified Theory of Information: Proceedings of the Second International Conference on the Foundations of Information Science, Psychology Press, →ISBN, page...

Forms of extropy

pluralextropies

Origin of extropy

First coined to serve as an antonym of entropy, substituting its en- element (representing the prepositional prefix ἐν (en), en, “in” in its Ancient Greek etymon ἐντροπία (entropía), entropia, “a turning towards”) with ex- (representing the Ancient Greek ἐξ (ex), ex, “out of”, “from”); because ἐξ (ex) takes the form ἐκ (ek) when prefixed to an element beginning with τ (t), the analogical spelling is ectropy (or, alternatively, ektropy), as if after the Ancient Greek *ἐκτροπία (ektropía, “a turning out of”).

Words formed from extropy

Questions about extropy

What does extropy mean?
Extropy means negentropy.
What part of speech is extropy?
Extropy is a noun.
What is the plural of extropy?
The plural of extropy is extropies.

Words near extropy in the dictionary

  1. extropia
  2. extropian
  3. extropianism
  4. extropians
  5. extropies
  6. extropy
  7. extrordinary
  8. extrorsal
  9. extrorse
  10. extrorsely
  11. extros

Source and license

Adapted from Wiktionary: extropy (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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