red dwarf

noun
|Updated on: 31 May 2018

Definition of red dwarf

: a star having substantially lower surface temperature, intrinsic luminosity, mass, and size than the sun

Recent Examples of red dwarf from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'red dwarf.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of red dwarf

1926

in the meaning defined above

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