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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
What is a neutron star, or pulsar? Adam Harrington, CBS News, 23 Dec. 2025 Pulsar 2849 intrigued me with its neutron star premise. Nola Taylor Tillman, Space.com, 21 Dec. 2025 Furthermore, the gravitational waves suggested at least one of the two neutron stars was less massive than the sun. Andrew Paul, Popular Science, 17 Dec. 2025 The particular type of neutron star that emits radio bursts is called a magnetar, with a magnetic field a thousand trillion times stronger than the Earth’s. Chris Impey, The Conversation, 4 Dec. 2025 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

Browse Nearby Words

Cite this Entry

“Neutron star.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/neutron%20star. Accessed 3 Jan. 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

More from Merriam-Webster on neutron star

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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