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red giant

noun, Astronomy.
a star in an intermediate stage of evolution, characterized by a large volume, low surface temperature, and reddish hue.
Origin of red giant
First recorded in 1915-20 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for red giant
Historical Examples
  • Bottles hesitated; the company shuddered out: "'Tis the red giant."

    The O'Ruddy Stephen Crane
  • "Norman of Torn dares ride where he will in all England," boasted the red giant.

    The Outlaw of Torn Edgar Rice Burroughs
  • The time required for the evolution of a star from red giant to red dwarf is not known, but it must be very great.

    Astronomy for Young Folks Isabel Martin Lewis
  • But the question as to how the red giant stars were formed has received less satisfactory and precise answers.

  • The red giant was a medicine man, for he clashed and rattled an enormous gourd full of bowlders.

    Out of the Depths

    Robert Ames Bennet
  • The red giant had the advantage in height, if not in weight; the black giant in strength of muscle, if not in suppleness of limbs.

    Burl Morrison Heady
  • There was the fleck of white high up near the top of the red giant, its white-dwarf companion in transit.

    Earthsmith Milton Lesser
  • Roger de Conde spoke no English, and yet she had plainly heard English words upon this man's lips as he addressed the red giant.

    The Outlaw of Torn Edgar Rice Burroughs
British Dictionary definitions for red giant

red giant

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 & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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red giant in Science
red giant  
A giant star that has a relatively low surface temperature, giving it a reddish or orange hue. Red giants are non-main-sequence stars positioned in the upper right of the Hertzsprung-Russell diagram. They are not massive stars but rather late, expanded stages of lower-mass main-sequence stars that have exhausted the hydrogen in their core and are fusing their remaining hydrogen into helium in a luminous outer shell. The Sun is expected to become a red giant in about 5 billion years, expanding to 70 times its current size and bringing its surface extremely close to Earth's present orbit. See more at star. See Note at dwarf star.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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