• synonyms

red star

noun Astronomy.
  1. any star with a low surface temperature and a reddish color, as a red giant or a red dwarf.
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Origin of red star

First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for red star

Historical Examples

  • One is the F. of hydrogen; another is the red-star line of Jupiter and Saturn.

    History of Astronomy

    George Forbes