chromosphere
noun
chro·mo·sphere
ˈkrō-mə-ˌsfir 
: the region of the atmosphere of a star (such as the sun) between the star's photosphere and its corona
Examples of chromosphere in a Sentence
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This breathtaking image from James Sinclair gives us a detailed view of a section of the sun's atmosphere known as the chromosphere — a chaotic region where hydrogen and helium plasma is molded and reshaped by our star's ever-shifting magnetic field.
—
Anthony Wood, Space.com, 12 Sep. 2025
After launching, the sounding rocket took about 90 seconds to reach space and point toward the sun, another eight minutes to conduct the experiment on the chromosphere, and no more than five minutes to return to Earth’s surface.
—Eric Lagatta, USA Today, 21 July 2025
The type of emission studied originated in a layer of the sun called the chromosphere—a region which was visible to people in the U.S. during the total solar eclipse of April 2024.
—Tom Rogers, MSNBC Newsweek, 29 Apr. 2025
Studying the sun’s photosphere and chromosphere will allow researchers to examine how plasma flows and shifting magnetic fields interact to trigger surface eruptions.
—Andrew Paul, Popular Science, 24 Apr. 2025
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Anthony Wood, Space.com, 12 Sep. 2025
After launching, the sounding rocket took about 90 seconds to reach space and point toward the sun, another eight minutes to conduct the experiment on the chromosphere, and no more than five minutes to return to Earth’s surface.
—Eric Lagatta, USA Today, 21 July 2025
The type of emission studied originated in a layer of the sun called the chromosphere—a region which was visible to people in the U.S. during the total solar eclipse of April 2024.
—Tom Rogers, MSNBC Newsweek, 29 Apr. 2025
Studying the sun’s photosphere and chromosphere will allow researchers to examine how plasma flows and shifting magnetic fields interact to trigger surface eruptions.
—Andrew Paul, Popular Science, 24 Apr. 2025
See All Example Sentences for chromosphere
Cite this Entry
“Chromosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chromosphere. Accessed 30 Oct. 2025.
Copy CitationKids Definition
chromosphere
noun
chro·mo·sphere
ˈkrō-mə-ˌsfi(ə)r
: the part of the atmosphere of the sun or a star between the photosphere and corona
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