red giant

/ˌˈrɛd ˌdʒaɪənt/
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Other forms: red giants

Definitions of red giant
  1. noun
    a large, old, luminous star; has a relatively low surface temperature and a diameter large relative to the sun
    synonyms: red giant star
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    type of:
    star
    (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior
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