white dwarf

noun
plural white dwarfs

Definition of white dwarf

: 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 The white dwarf was created when an old star burned out, collapsing in on itself. Joshua Hawkins, BGR, 17 Mar. 2022 Over time, the white dwarf siphons matter from its companion. Joshua Hawkins, BGR, 16 June 2022 Before becoming a white dwarf, the star was much like our sun. Fionna M. D. Samuels, Scientific American, 21 July 2022 For the first time, Webb was able to unshroud the white dwarf — which appears as the red dot in the picture above — from the dust that surrounds it. Los Angeles Times, 12 July 2022 The white dwarf star then exploded as a supernova type Ia. Jamie Carter, Forbes, 28 May 2022 This artist's impression shows a two-star system, with a white dwarf (foreground) and a companion star (background), where a micronova explosion can occur. Ashley Strickland, CNN, 23 May 2022 Two of the micronovae occurred on white dwarfs, and the astronomers followed up on the third using the Very Large Telescope to confirm it was also a white dwarf. Ashley Strickland, CNN, 20 Apr. 2022 The team relied on additional observations from the European Southern Observatory's Very Large Telescope to confirm the third was also a white dwarf. Jennifer Ouellette, Ars Technica, 20 Apr. 2022 See More

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

First Known Use of white dwarf

1922, in the meaning defined above

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Time Traveler for white dwarf

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The first known use of white dwarf was in 1922

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Dictionary Entries Near white dwarf

whited sepulcher

white dwarf

white-ear

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Statistics for white dwarf

Last Updated

11 Sep 2022

Cite this Entry

“White dwarf.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/white%20dwarf. Accessed 25 Sep. 2022.

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