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white dwarf |
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white dwarf n (Astronomy) one of a large class of small faint stars of enormous density (on average 108 kg/m3) with diameters only about 1 per cent that of the sun, and masses less than the Chandrasekhar limit (about 1.4 solar masses). It is thought to mark the final stage in the evolution of a sun-like star white′ dwarf′ n. a star that is approximately the size of the earth, has undergone gravitational collapse, and is in the final stage of evolution for low-mass stars, beginning hot and white and ending cold and dark (black dwarf). [1920–25]
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