chromo-sphere

chromosphere

[kroh-muh-sfeer]
noun Astronomy.
1.
a scarlet, gaseous envelope surrounding the sun outside the photosphere, from which enormous quantities of hydrogen and other gases are erupted.
2.
a gaseous envelope surrounding a star.

Origin:
1865–70; chromo- + -sphere

chromospheric [kroh-muh-sfer-ik, -sfeer-] , adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
chromosphere (ˈkrəʊməˌsfɪə)
 
n
a gaseous layer of the sun's atmosphere extending from the photosphere to the corona and visible during a total eclipse of the sun
 
chromospheric
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

chromosphere
1868, from chromo-, from Gk. khrome "color" + -sphere. So called for its redness.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
chromosphere   (krō'mə-sfîr')  Pronunciation Key 
A glowing, transparent layer of gas surrounding the photosphere of a star. The Sun's chromosphere is several thousand kilometers thick, is composed mainly of hydrogen at temperatures of 6,000° to 20,000°K, and gives off reddish light.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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