WordReference Random House Unabridged Dictionary of American English © 2026
S star, [Astron.]
  1. Astronomya relatively cool red giant having a surface temperature of about 2500 K and an absorption spectrum with strong lines of zirconium oxide. Cf. spectral type. 

'S star' also found in these entries (note: many are not synonyms or translations):
Barnard's star - rater

Forum discussions with the word(s) "S star" in the title:


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