M star
nounAstronomy.
a relatively cool, red star, as Antares or Betelgeuse, having a surface temperature of less than 3600 K and an absorption spectrum dominated by molecular bands, especially titanium oxide.
- Compare spectral type.
Words Nearby M star
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
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