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A low-mass star of great size and luminosity that has a relatively low surface temperature, giving it a reddish or orange hue.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Celestial Objects) a giant star towards the end of its life, with a relatively low temperature of 2000–4000 K, that emits red light
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
a star in an intermediate stage of evolution, characterized by a large volume, low surface temperature, and reddish hue.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A star 10–100 times the Sun’s size.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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|Noun||1.||red giant - a large, old, luminous star; has a relatively low surface temperature and a diameter large relative to the sun|
star - (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
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