white dwarf

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 Last year’s discovery of a Jupiter-sized planet circling a white dwarf made scientists reconsider the possibility of finding life in unlikely places. Katrina Miller, Wired, 13 July 2021 The way this white dwarf, named ZTF J1901+1458, was born also is unusual. NBC News, 1 July 2021 Astronomers have discovered the smallest white dwarf star ever documented around 130 lightyears from Earth, reports Leah Crane for New Scientist. Alex Fox, Smithsonian Magazine, 2 July 2021 The white dwarf is actually shrinking very gradually, becoming ever more dense. NBC News, 1 July 2021 Along another wall rested an image of a grainy, purple wheel-like image, which Lawson told me is a white dwarf star called Sirius B. It’s the companion to Sirius A, the brightest star in the night sky, and as such, blotted out by the brightness. New York Times, 5 May 2021 With neutron star or white dwarf cores, the larger star’s fate is sealed: no supernova. Ethan Siegel, Forbes, 12 Apr. 2021 The show’s soul, however, is the central relationship between Legoshi, a male gray wolf, and Haru, a female white dwarf rabbit. Eric Vilas-boas, Vulture, 5 Apr. 2021 The mass of Stein 2051 B, a white dwarf star located about 18 light-years from Earth, has been a subject of some controversy for over a century. Calla Cofield, Scientific American, 9 June 2017

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.

See More

First Known Use of white dwarf

1922, in the meaning defined above

Keep scrolling for more

Learn More About white dwarf

Time Traveler for white dwarf

Time Traveler

The first known use of white dwarf was in 1922

See more words from the same year

Dictionary Entries Near white dwarf

whited sepulcher

white dwarf


See More Nearby Entries 

Statistics for white dwarf

Last Updated

25 Jul 2021

Cite this Entry

“White dwarf.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/white%20dwarf. Accessed 1 Aug. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for white dwarf

white dwarf


English Language Learners Definition of white dwarf

astronomy : a star that is at the end of its life and is very hot, small, and dense

More from Merriam-Webster on white dwarf

Thesaurus: All synonyms and antonyms for white dwarf


Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.


Anagram puzzles meet word search.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!