neutron star

noun

Synonyms of neutron starnext
: a dense celestial object that consists primarily of closely packed neutrons and that results from the collapse of a much larger stellar body

Examples of neutron star in a Sentence

Recent Examples on the Web
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Compact objects, in the form of black holes, neutron stars and white dwarfs, are the remains of stars that have died. Keith Cooper, Space.com, 11 Sep. 2026 Hubble’s images reveal an intricate web of gas and dust spreading outward from the explosion’s center, where a rapidly spinning neutron star remains. Kaif Shaikh, Interesting Engineering, 15 Aug. 2026 After the explosion, Betelgeuse A will probably leave behind a superdense neutron star with an incredibly strong magnetic field. Phil Plait, Scientific American, 14 Aug. 2026 See All Example Sentences for neutron star

Word History

First Known Use

1934, in the meaning defined above

Time Traveler
The first known use of neutron star was in 1934

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Cite this Entry

“Neutron star.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neutron%20star. Accessed 14 Sep. 2026.

Kids Definition

neutron star

noun
: a very dense object in space that consists of closely packed neutrons and is produced by the collapse of a much larger star

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