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white dwarf
noun
plural white dwarfs
: 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
Such white dwarf stars are the hot, glowing stellar cores left behind when dying sunlike stars blow off their outer layers.
—Tom Metcalfe, Scientific American, 31 Oct. 2024
Scientists are hoping to study the nova to discover what happens when the material is blasted from the white dwarf and distributed into neighboring galaxies, Boyd said.
—Julia Jacobo, ABC News, 31 Oct. 2024
Hounsell said white dwarf stars aren't much larger in size than planet Earth.
—John Tufts, The Indianapolis Star, 6 Sep. 2024
The nova, also referred to as a thermonuclear explosion, occurs when enough material from the red giant builds up in the white dwarf to power a bright outburst.
—Alexa Robles-Gil, Smithsonian Magazine, 7 Oct. 2024
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Word History
First Known Use
1922, in the meaning defined above
Dictionary Entries Near white dwarf
Cite this Entry
“White dwarf.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/white%20dwarf. Accessed 21 Nov. 2024.
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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