black dwarf

plural black dwarfs

Definition of black dwarf

: a very small cooled remnant of white dwarf that emits no detectable light

Examples of black dwarf in a Sentence

Recent Examples on the Web These positrons would ever-so-slowly destroy some of the electrons in a black dwarf’s center and weaken its degeneracy pressure. Adam Mann, Science | AAAS, "This is the way the universe ends: not with a whimper, but a bang," 11 Aug. 2020 But eventually, these relics cool off and become a black dwarf. Adam Mann, Science | AAAS, "This is the way the universe ends: not with a whimper, but a bang," 11 Aug. 2020 These tiny, denser stellar husks eventually fade into elusive black dwarf stars, which are nearly undetectable by astronomers. Jennifer Leman, Popular Mechanics, "What Are Stars?: A Guide," 13 June 2020 Right before either going supernova or turning into a black dwarf, dying stars turn into white dwarves. Jennifer Leman, Popular Mechanics, "Scientists Witness the Death of a Solar System, and the Birth of Necroplanetology," 1 Apr. 2020

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

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First Known Use of black dwarf

1925, in the meaning defined above

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The first known use of black dwarf was in 1925

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Cite this Entry

“Black dwarf.” Dictionary, Merriam-Webster, Accessed 30 Nov. 2020.

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