Word.ws English Dictionary

ergosphere

ergosphere noun: a region outside the event horizon of a rotating black hole in which space and time are distorted by shear forces.

Noun

ergosphere (plural ergospheres)

  1. A region outside the event horizon of a rotating black hole in which space and time are distorted by shear forces.

Forms of ergosphere

pluralergospheres

Origin of ergosphere

From ergo- + -sphere. Coined by Remo Ruffini and John Archibald Wheeler in 1971 in reference to the fact that it is theoretically possible to extract energy from the region.

Words formed from ergosphere

Questions about ergosphere

What does ergosphere mean?
Ergosphere means a region outside the event horizon of a rotating black hole in which space and time are distorted by shear forces.
What part of speech is ergosphere?
Ergosphere is a noun.
What is the plural of ergosphere?
The plural of ergosphere is ergospheres.

Words near ergosphere in the dictionary

  1. ergosine
  2. ergosines
  3. ergosomal
  4. ergosome
  5. ergosomes
  6. ergosphere
  7. ergospheres
  8. ergospheric
  9. ergospherical
  10. ergospirometer
  11. ergospirometers

Source and license

Adapted from Wiktionary: ergosphere (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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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Rho9998-ergosphere.wav.

Cite this entry: “ergosphere.” Word.ws, https://word.ws/ergosphere. Based on Wiktionary, CC BY-SA 4.0.