red star

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noun Astronomy.

any star with a low surface temperature and a reddish color, as a red giant or a red dwarf.

Origin of red star

First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for red star

Historical Examples of red star

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