red star

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 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for red star

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

    History of Astronomy|George Forbes