Definition of chromosphere in English:

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Pronunciation: /ˈkrōməˌsfir/


A reddish gaseous layer immediately above the photosphere of the sun or another star. Together with the corona, it constitutes the star’s outer atmosphere.
Example sentences
  • Prominences, flares, plages, and other features of the solar chromosphere can be observed in hydrogen light.
  • Solar flares appear as sudden, intense flashes in the chromosphere of the Sun.
  • For decades astronomers labored to get good photographs of the chromosphere, and in particular its spectrum.



Pronunciation: /ˌkrōməˈsfi(ə)rik/ Pronunciation: /-ˈsferik/
Example sentences
  • As the Sun went dark the corona became visible to all, although not much of a chromospheric display was seen, with only one notable prominence, perhaps two close by each other.
  • Thus, detection of this resonance will provide an important new constraint on chromospheric models.
  • This expansion of chromospheric plasma up into the corona during a flare is generally called chromospheric evaporation.


Mid 19th century: from chromo-2 'color' + sphere.

For editors and proofreaders

Syllabification: chro·mo·sphere

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