red dwarf(redirected from M dwarf)
Also found in: Thesaurus, Encyclopedia.
Related to M dwarf: red dwarf star
A dwarf star, ranging in mass from one-tenth to one-half the mass of the sun, whose relatively cool surface temperature makes it appear red-orange in color.
(Celestial Objects) one of a class of small cool main-sequence stars
any of the faint reddish stars smaller than the sun and with low surface temperatures, about 2000–3000 K.
A star that is cool, small, and very faint. Red dwarfs burn very slowly and live for about 100 billion years. Although they are difficult to see, they are likely the most abundant type of star. Proxima Centauri is a red dwarf.
Switch to new thesaurus
|Noun||1.||red dwarf - a small, old, relatively cool star; approximately 100 times the mass of Jupiter|
flare star - a red dwarf star in which luminosity can change several magnitudes in a few minutes
star - (astronomy) a celestial body of hot gases that radiates energy derived from thermonuclear reactions in the interior