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

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Once a star dies, there are a number of possible fates that can ensue as well, as a stellar corpse can remain as a white dwarf, a neutron star, or a black hole. — Big Think, 14 Apr. 2026 Gamma rays are the most energetic type of light rays, typically marking the last gasp of a dying star or the cataclysmic clap of two neutron stars. — Quanta Magazine, 6 May 2026 When this phenomenon happens, all the matter in the neutron star fuses into one big atom, with a density of about a million billion g/cc. — Stephen Dikerby, The Conversation, 29 June 2026 These include supernovae and other cataclysms, such as gamma-ray bursts (GRBs), some of which arise from colliding black holes or neutron stars and are among the most powerful explosions in the universe. — Clara Moskowitz, Scientific American, 1 July 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

Rhymes for neutron star

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Browse Nearby Words

neutron bomb
neutron star
neutropenia
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Cite this Entry

“Neutron star.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neutron%20star. Accessed 7 Jul. 2026.

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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

More from Merriam-Webster on neutron star

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Britannica.com: Encyclopedia article about neutron star

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