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

But those findings have yet to be linked to a white dwarf, a neutron star, or another source. —Paul Smaglik, Discover Magazine, 12 Mar. 2025

Like all neutron stars, magnetars are formed when massive stars run out of their fuel for nuclear fusion. —Robert Lea, Space.com, 25 Feb. 2025

As the star's core rapidly crushes down to form a neutron star, the outer layers and most of the star's mass are blown away in a core-collapse supernova. —Robert Lea, Space.com, 25 Feb. 2025

That year observations of a merging neutron star revealed that gravitational waves and electromagnetic waves arrived at Earth within three seconds of each other—after traversing a distance of 130 million light-years. —Paul M. Sutter, Scientific American, 26 Feb. 2025

Word History

First Known Use

1934, in the meaning defined above

Rhymes for neutron star

• abattoir
• alcazar
• autocar
• avatar
• belshazzar
• caviar
• caviare
• cinnabar
• commissar
• condylar
• deodar
• handlebar

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