white dwarf

noun

plural white dwarfs
Synonyms of white dwarfnext
: a small hot whitish star of low intrinsic brightness usually with a mass approximately equal to that of the sun but with a density many times larger

Examples of white dwarf in a Sentence

Recent Examples on the Web
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The stellar remnant will contract to form a white dwarf, and while the planetary nebula will fade after perhaps 20,000 years, the white dwarf will continue to shine for many trillions of years before fading out. Big Think, 11 Feb. 2026 This leads to the stars ending their lives as smoldering stellar embers called white dwarfs. Robert Lea, Space.com, 4 Feb. 2026 The process of expending off energy makes a dying star what's called a red giant, before the white dwarf remains. Keith Matheny, Freep.com, 11 Dec. 2025 At the heart of this bipolar nebula is a white dwarf star that cast aside its outer layers of gas long ago. CBS News, 27 Nov. 2025 See All Example Sentences for white dwarf

Word History

First Known Use

1922, in the meaning defined above

Time Traveler
The first known use of white dwarf was in 1922

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Cite this Entry

“White dwarf.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/white%20dwarf. Accessed 15 Feb. 2026.

Kids Definition

white dwarf

noun
: a small whitish star of low brightness that has a mass approximately equal to that of the sun but that is many times more dense

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