Word.ws English Dictionary

celatone

celatone noun: a device invented by Galileo Galilei to observe Jupiter's moons with the purpose of finding longitude on Earth. It took the form of a piece of headgear with a telescope taking the place of an eyehole.

Noun

celatone (plural celatones)

  1. (historical) A device invented by Galileo Galilei to observe Jupiter's moons with the purpose of finding longitude on Earth. It took the form of a piece of headgear with a telescope taking the place of an eyehole.
    • Galileo had designed a special navigation helmet for finding longitude with the Jovian satellites. The headgear—the celatone—has been compared to a brass gas mask in appearance, with a telescope attached to one of the eyeholes.1995, Dava Sobel, Longitude

Forms of celatone

pluralcelatones

Questions about celatone

What does celatone mean?
Celatone means a device invented by Galileo Galilei to observe Jupiter's moons with the purpose of finding longitude on Earth. It took the form of a piece of headgear with a telescope taking the place of an eyehole.
What part of speech is celatone?
Celatone is a noun.
What is the plural of celatone?
The plural of celatone is celatones.

Words near celatone in the dictionary

  1. Celaront
  2. Celaru
  3. Celas
  4. celastraceous
  5. celastrol
  6. celatone
  7. celatones
  8. celature
  9. celatures
  10. Celaya
  11. Celayas

Source and license

Adapted from Wiktionary: celatone (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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