Word.ws English Dictionary

aeolipile

/ˈiː.əʊ.lɪ.pʌɪl/

aeolipile noun: a steam engine powered by rocket propulsion due to escaping steam, consisting of a pressure vessel mounted on a bearing, with one or more tubes which exhaust steam tangentially to the rotation axis so as to create rotation, which is mostly regarded as a curiosity with no practical use.

Noun

aeolipile (plural aeolipiles)

  1. A steam engine powered by rocket propulsion due to escaping steam, consisting of a pressure vessel mounted on a bearing, with one or more tubes which exhaust steam tangentially to the rotation axis so as to create rotation, which is mostly regarded as a curiosity with no practical use.
    • His machine, called an aeolipile, was quite simple. Water in a sealed kettle was heated to boiling over a fire. As the steam expanded, it traveled up two tubes into a sphere, which had two L-shaped openings. The steam would force its way out of the openings, causing the sphere to spin.2020, John Rocco, How We Got to the Moon, page 29

Forms of aeolipile

pluralaeolipiles
alternative formaeolipyle
alternative formeolipile

Origin of aeolipile

From French éolipyle, from Latin Aeoli pylae (“doorway of Aeolus”).

Questions about aeolipile

What does aeolipile mean?
Aeolipile means a steam engine powered by rocket propulsion due to escaping steam, consisting of a pressure vessel mounted on a bearing, with one or more tubes which exhaust steam tangentially to the rotation axis so as to create rotation, which is mostly regarded as a curiosity with no practical use.
What part of speech is aeolipile?
Aeolipile is a noun.
How do you pronounce aeolipile?
Aeolipile is pronounced /ˈiː.əʊ.lɪ.pʌɪl/.
What is the plural of aeolipile?
The plural of aeolipile is aeolipiles.

Words near aeolipile in the dictionary

  1. aeolidiids
  2. aeolids
  3. aeolina
  4. aeolinas
  5. Aeoline
  6. aeolipile
  7. aeolipiles
  8. aeolipyle
  9. aeolipyles
  10. Aeolis
  11. Aeolis Mons

Source and license

Adapted from Wiktionary: aeolipile (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.

Last updated:

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