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neutron star
noun
: 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
Pulsars are rapidly spinning cosmic remnants called neutron stars that form when massive stars run out of fuel and collapse under their own gravity.
—Robert Lea, Space.com, 19 Dec. 2024
This conclusion was reached thanks to new data about the accelerations of nearby pulsars—rapidly spinning neutron stars that emit beams of radiation that sweep out through space light the beacon of a lighthouse.
—Gordon G. Chang, Newsweek, 11 Dec. 2024
The gravitational wavefront from a collision of two neutron stars some 115 million light years away had, LIGO reported, just passed through the earth.
—IEEE Spectrum, 28 Aug. 2019
The collisions of compact astrophysical objects such as black holes and neutron stars emit strong gravitational waves.
—Gaurav Khanna, Discover Magazine, 27 May 2024
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Word History
First Known Use
1934, in the meaning defined above
Dictionary Entries Near neutron star
Cite this Entry
“Neutron star.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neutron%20star. Accessed 5 Jan. 2025.
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
Thesaurus: All synonyms and antonyms for neutron star
Britannica.com: Encyclopedia article about neutron star
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