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WordReference Random House Unabridged Dictionary of American English © 2024white′ dwarf′, [Astron.]- Astronomya star, approximately the size of the earth, that 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.) Cf. Chandrasekhar limit.
Collins Concise English Dictionary © HarperCollins Publishers:: white dwarf n - 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
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