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
chromospheric
ˌkrō-mə-ˈsfir-ik -ˈsfer-
adjective -ˈsfer- 
Example Sentences
Recent Examples on the Web The setup is also equipped with a DayStar Quark (chromosphere) solar filter. 
Joshua Hawkins, BGR, 2 May 2022 On a recent visit, Tundup clicked open a file on a computer and pointed around a red stubbled image of the sun’s chromosphere. Raghu Karnad, The New Yorker, 19 Sep. 2020 She and her colleagues scoured data from 2,700 nearby sunlike stars and found that 39 appeared to be missing their chromospheres. Shannon Hall, Scientific American, 23 Dec. 2019 The hot, outer layers of its atmosphere known as the chromosphere appeared to be missing. Shannon Hall, Scientific American, 23 Dec. 2019 The chromosphere and corona make up the sun's the solar atmosphere. Jennifer Leman, Popular Mechanics, 3 Nov. 2019 At any given moment, part of the sun's atmosphere, known as the chromosphere, is filled with up to 10 million spicules that usually last under 10 minutes. Jason Daley, Smithsonian, 15 Nov. 2019 Mariona Badenas, 25, of Spain, walked past, heading for the observatory, where a special telescope allows her to look at the sun’s chromosphere, or second layer of atmosphere. David Kelly, latimes.com, 23 June 2019 But because Earth would cover more of the space surrounding the sun, lunar residents wouldn’t be able to see the chromosphere — the fiery region of high-energy flares ejecting from the sun’s surface. Matthew Cappucci, Washington Post, 30 Jan. 2018 See More
Joshua Hawkins, BGR, 2 May 2022 On a recent visit, Tundup clicked open a file on a computer and pointed around a red stubbled image of the sun’s chromosphere. Raghu Karnad, The New Yorker, 19 Sep. 2020 She and her colleagues scoured data from 2,700 nearby sunlike stars and found that 39 appeared to be missing their chromospheres. Shannon Hall, Scientific American, 23 Dec. 2019 The hot, outer layers of its atmosphere known as the chromosphere appeared to be missing. Shannon Hall, Scientific American, 23 Dec. 2019 The chromosphere and corona make up the sun's the solar atmosphere. Jennifer Leman, Popular Mechanics, 3 Nov. 2019 At any given moment, part of the sun's atmosphere, known as the chromosphere, is filled with up to 10 million spicules that usually last under 10 minutes. Jason Daley, Smithsonian, 15 Nov. 2019 Mariona Badenas, 25, of Spain, walked past, heading for the observatory, where a special telescope allows her to look at the sun’s chromosphere, or second layer of atmosphere. David Kelly, latimes.com, 23 June 2019 But because Earth would cover more of the space surrounding the sun, lunar residents wouldn’t be able to see the chromosphere — the fiery region of high-energy flares ejecting from the sun’s surface. Matthew Cappucci, Washington Post, 30 Jan. 2018 See More Word History
Etymology
chromo- + sphere entry 1
Note: Term introduced by the English astronomer J. Norman Lockyer (1836-1920) in "Spectroscopic Observations of the Sun. No. II…Read November 19 and 26, 1868," Philosophical Transactions of the Royal Society of London, vol. 159 for the year 1869, p. 430.
First Known Use
1868, in the meaning defined above