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M star

noun
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Definition of M star

: a red star characterized primarily by a surface temperature of 3,000 kelvins or less

— called also Type M star

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First Known Use of M star

1927, in the meaning defined above

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Dictionary Entries Near M star

MST

M star

MsTh1

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Statistics for M star

Cite this Entry

“M star.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/M%20star. Accessed 23 Oct. 2021.

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